The Rio Grande is one of the principal rivers in the southwest United States and northern Mexico. The Rio Grande begins in south-central Colorado in the United States and flows to the Gulf of Mexico. Along the way, it forms part of the Mexico–United States border. According to the International Boundary and Water Commission, its total length was 1,896 miles in the late 1980s, though course shifts result in length changes. Depending on how it is measured, the Rio Grande is either the fourth- or fifth-longest river system in North America; the river serves as part of the natural border between the U. S. state of Texas and the Mexican states of Chihuahua, Nuevo León, Tamaulipas. A short stretch of the river serves as part of the boundary between the U. S. states of New Mexico. Since the mid–20th century, heavy water consumption by farms and cities along with many large diversion dams on the river has left only 20% of its natural discharge to flow to the Gulf. Near the river's mouth, the irrigated lower Rio Grande Valley is an important agricultural region.
The Rio Grande's watershed covers 182,200 square miles. Many endorheic basins are situated within, or adjacent to, the Rio Grande's basin, these are sometimes included in the river basin's total area, increasing its size to about 336,000 square miles; the Rio Grande rises in the western part of the Rio Grande National Forest in the U. S. state of Colorado. The river is formed by the joining of several streams at the base of Canby Mountain in the San Juan Mountains, just east of the Continental Divide. From there, it flows through the San Luis Valley south into the Middle Rio Grande Valley in New Mexico, passing through the Rio Grande Gorge near Taos toward Española, picking up additional water from the San Juan-Chama Diversion Project from the Rio Chama, it continues on a southerly route through the desert cities of Albuquerque and Las Cruces to El Paso and Ciudad Juárez, Chihuahua. In the Albuquerque area, the river flows past a number of historic Pueblo villages, including Sandia Pueblo and Isleta Pueblo.
Below El Paso, it serves as part of the border between the United States and Mexico. The official river border measurement ranges from 889 miles to 1,248 miles, depending on how the river is measured. A major tributary, the Rio Conchos, enters at Ojinaga, below El Paso, supplies most of the water in the border segment. Other tributaries include the Pecos and the smaller Devils, which join the Rio Grande on the site of Amistad Dam. Despite its name and length, the Rio Grande is not navigable by ocean-going ships, nor do smaller passenger boats or cargo barges use it as a route, it is navigable at all, except by small boats in a few places. The Rio Grande rises in high flows for much of its length at high elevation. In New Mexico, the river flows through the Rio Grande rift from one sediment-filled basin to another, cutting canyons between the basins and supporting a fragile bosque ecosystem on its flood plain. From El Paso eastward, the river flows through desert. Although irrigated agriculture exists throughout most of its stretch, it is extensive in the subtropical Lower Rio Grande Valley.
The river ends in a sandy delta at the Gulf of Mexico. During portions of 2001 and 2002, the mouth of the Rio Grande was blocked by a sandbar. In the fall of 2003, the sandbar was cleared by high river flows around 7,063 cubic feet per second. Navigation was active during much of the 19th century, with over 200 different steamboats operating between the river's mouth close to Brownsville and Rio Grande City, Texas. Many steamboats from the Ohio and Mississippi Rivers were requisitioned by the U. S. government and moved to the Rio Grande during the Mexican–American War in 1846. They provided transport for the U. S. Army, under General Zachary Taylor, to invade Monterrey, Nuevo León, via Camargo Municipality, Tamaulipas. Army engineers recommended that with small improvements, the river could be made navigable as far north as El Paso; those recommendations were never acted upon. The Brownsville & Matamoros International Bridge, a large swing bridge, dates back to 1910 and is still in use today by automobiles connecting Brownsville with Matamoros, Tamaulipas.
The swing mechanism has not been used since the early 1900s, when the last of the big steamboats disappeared. At one point, the bridge had rail traffic. Railroad trains no longer use this bridge. A new rail bridge connecting the U. S. and Mexico was built about 15 miles west of the Matamoros International Bridge. It was inaugurated in August 2015, it moved all rail operations out of downtown Matamoros. The West Rail International Crossing is the first new international rail crossing between the U. S. and Mexico in 105 years. The Brownsville & Matamoros International Bridge is now operated by the Brownsville and Matamoros Bridge Company, a joint venture between the Mexican government and the Union Pacific Railroad. At the mouth of the Rio Grande, on the Mexican side, was the large commercial port of Bagdad, Tamaulipas. During the American Civil War, this was the only legitimate port of the Confederacy. European warships anchored offshore to maintain the port's neutrality, managed to do so throughout that conflict, despite occasional stare-downs with blockading ships from the US Navy.
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Lyndon B. Johnson
Lyndon Baines Johnson referred to as LBJ, was an American politician who served as the 36th president of the United States from 1963 to 1969. The 37th vice president of the United States from 1961 to 1963, he assumed the presidency following the assassination of President John F. Kennedy. A Democrat from Texas, Johnson served as a United States Representative and as the Majority Leader in the United States Senate. Johnson is one of only four people. Born in a farmhouse in Stonewall, Johnson was a high school teacher and worked as a congressional aide before winning election to the House of Representatives in 1937, he won election to the Senate in 1948 and was appointed to the position of Senate Majority Whip in 1951. He became the Senate Minority Leader in 1953 and the Senate Majority Leader in 1955, he became known for his domineering personality and the "Johnson treatment", his aggressive coercion of powerful politicians to advance legislation. Johnson ran for the Democratic nomination in the 1960 presidential election.
Although unsuccessful, he accepted the invitation of then-Senator John F. Kennedy of Massachusetts to be his running mate, they went on to win a close election over the Republican ticket of Richard Nixon and Henry Cabot Lodge Jr. On November 22, 1963, Kennedy was assassinated and Johnson succeeded him as president; the following year, Johnson won in a landslide. With 61.1 percent of the popular vote, Johnson won the largest share of the popular vote of any candidate since the uncontested 1820 election. In domestic policy, Johnson designed the "Great Society" legislation to expand civil rights, public broadcasting, Medicaid, aid to education, the arts and rural development, public services and his "War on Poverty". Assisted in part by a growing economy, the War on Poverty helped millions of Americans rise above the poverty line during his administration. Civil rights bills that he signed into law banned racial discrimination in public facilities, interstate commerce, the workplace and housing.
With the passage of the Immigration and Nationality Act of 1965, the country's immigration system was reformed, encouraging greater emigration from regions other than Europe. Johnson's presidency marked the peak of modern liberalism after the New Deal era. In foreign policy, Johnson escalated American involvement in the Vietnam War. In 1964, Congress passed the Gulf of Tonkin Resolution, which granted Johnson the power to use military force in Southeast Asia without having to ask for an official declaration of war; the number of American military personnel in Vietnam increased from 16,000 advisors in non-combat roles in 1963 to 525,000 in 1967, many in combat roles. American casualties soared and the peace process stagnated. Growing unease with the war stimulated a large, angry anti-war movement based chiefly among draft-age students on university campuses. Johnson faced further troubles when summer riots began in major cities in 1965 and crime rates soared, as his opponents raised demands for "law and order" policies.
While Johnson began his presidency with widespread approval, support for him declined as the public became frustrated with both the war and the growing violence at home. In 1968, the Democratic Party factionalized. Nixon was elected to succeed him, as the New Deal coalition that had dominated presidential politics for 36 years collapsed. After he left office in January 1969, Johnson returned to his Texas ranch, where he died of a heart attack at age 64, on January 22, 1973. Johnson is ranked favorably by many historians because of his domestic policies and the passage of many major laws that affected civil rights, gun control, wilderness preservation, Social Security, although he has drawn substantial criticism for his escalation of the Vietnam War. Lyndon Baines Johnson was born on August 27, 1908, near Stonewall, Texas, in a small farmhouse on the Pedernales River, he was the oldest of five children born to Samuel Ealy Johnson Rebekah Baines. Johnson had one brother, Sam Houston Johnson, three sisters.
The nearby small town of Johnson City, was named after LBJ's cousin, James Polk Johnson, whose forebears had moved west from Georgia. Johnson had English and Ulster Scots ancestry, he was maternally descended from pioneer Baptist clergyman George Washington Baines, who pastored eight churches in Texas, as well as others in Arkansas and Louisiana. Baines, the grandfather of Johnson's mother, was the president of Baylor University during the American Civil War. Johnson's grandfather, Samuel Ealy Johnson Sr. was raised as a Baptist and for a time was a member of the Christian Church. In his years the grandfather became a Christadelphian; as a politician, Johnson was influenced in his positive attitude toward Jews by the religious beliefs that his family his grandfather, had shared with him. Johnson's favorite Bible verse came from the King James Version of Isaiah 1:18. "Come now, let us reason together..." In school, Johnson was an awkward, talkative youth, elected president of his 11th-grade class.
He graduated in 1924 from Johnson City High School, where he participated in public speaking and baseball. At age 15, Johnson was the youngest member of his class. Pressured by his parents to attend college, he en
Arizona is a state in the southwestern region of the United States. It is part of the Western and the Mountain states, it is the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona shares the Four Corners region with Utah and New Mexico. Arizona is the 48th state and last of the contiguous states to be admitted to the Union, achieving statehood on February 14, 1912, coinciding with Valentine's Day. Part of the territory of Alta California in New Spain, it became part of independent Mexico in 1821. After being defeated in the Mexican–American War, Mexico ceded much of this territory to the United States in 1848; the southernmost portion of the state was acquired in 1853 through the Gadsden Purchase. Southern Arizona is known for its desert climate, with hot summers and mild winters. Northern Arizona features forests of pine, Douglas fir, spruce trees. There are ski resorts in the areas of Flagstaff and Tucson. In addition to the Grand Canyon National Park, there are several national forests, national parks, national monuments.
About one-quarter of the state is made up of Indian reservations that serve as the home of 27 federally recognized Native American tribes, including the Navajo Nation, the largest in the state and the United States, with more than 300,000 citizens. Although federal law gave all Native Americans the right to vote in 1924, Arizona excluded those living on reservations in the state from voting until the state Supreme Court ruled in favor of Native American plaintiffs in Trujillo v. Garley; the state's name appears to originate from an earlier Spanish name, derived from the O'odham name alĭ ṣonak, meaning "small spring", which applied only to an area near the silver mining camp of Planchas de Plata, Sonora. To the European settlers, their pronunciation sounded like "Arissona"; the area is still known as alĭ ṣonak in the O'odham language. Another possible origin is the Basque phrase haritz ona, as there were numerous Basque sheepherders in the area. A native Mexican of Basque heritage established the ranchería of Arizona between 1734 and 1736 in the current Mexican state of Sonora, which became notable after a significant discovery of silver there, c.
1737. There is a misconception. For thousands of years before the modern era, Arizona was home to numerous Native American tribes. Hohokam and Ancestral Puebloan cultures were among the many that flourished throughout the state. Many of their pueblos, cliffside dwellings, rock paintings and other prehistoric treasures have survived, attracting thousands of tourists each year; the first European contact by native peoples was with Marcos de Niza, a Spanish Franciscan, in 1539. He explored parts of the present state and made contact with native inhabitants the Sobaipuri; the expedition of Spanish explorer Coronado entered the area in 1540–1542 during its search for Cíbola. Few Spanish settlers migrated to Arizona. One of the first settlers in Arizona was José Romo de Vivar. Father Kino was the next European in the region. A member of the Society of Jesus, he led the development of a chain of missions in the region, he converted many of the Indians to Christianity in the Pimería Alta in the 1690s and early 18th century.
Spain founded presidios at Tubac in 1752 and Tucson in 1775. When Mexico achieved its independence from the Kingdom of Spain and its Spanish Empire in 1821, what is now Arizona became part of its Territory of Nueva California known as Alta California. Descendants of ethnic Spanish and mestizo settlers from the colonial years still lived in the area at the time of the arrival of European-American migrants from the United States. During the Mexican–American War, the U. S. Army occupied the national capital of Mexico City and pursued its claim to much of northern Mexico, including what became Arizona Territory in 1863 and the State of Arizona in 1912; the Treaty of Guadalupe Hidalgo specified that, in addition to language and cultural rights of the existing inhabitants of former Mexican citizens being considered as inviolable, the sum of US$15 million dollars in compensation be paid to the Republic of Mexico. In 1853, the U. S. acquired the land south below the Gila River from Mexico in the Gadsden Purchase along the southern border area as encompassing the best future southern route for a transcontinental railway.
What is now known as the state of Arizona was administered by the United States government as part of the Territory of New Mexico until the southern part of that region seceded from the Union to form the Territory of Arizona. This newly established territory was formally organized by the Confederate States government on Saturday, January 18, 1862, when President Jefferson Davis approved and signed An Act to Organize the Territory of Arizona, marking the first official use of the name "Territory of Arizona"; the Southern territory supplied the Confederate government with men and equipment. Formed in 1862, Arizona scout companies served with the Confederate States Army duri
Adolfo López Mateos
Adolfo López Mateos was a Mexican politician who became a member of the Institutional Revolutionary Party, after earlier opposing its precursor in 1929. He was elected President of Mexico, serving from 1958 to 1964; as president, he nationalized electric companies, created the National Commission for Free Textbooks, settled the Chamizal dispute, opened important museums such as the Museum of Natural History and the National Museum of Anthropology in Mexico City was promoted. Declaring his political philosophy to be "left within the Constitution," López Mateos was the first self-declared left-wing politician to hold the presidency since Lázaro Cárdenas. López Mateos was well-known for being popular among the Mexican people and having a great public image. Alongside Lázaro Cárdenas and Adolfo Ruiz Cortines, López Mateos is considered one of the most popular Mexican presidents of the 20th century despite acts of repression that occurred during his administration (such as the arrest of union leaders Demetrio Vallejo and Valentín Campa the murder of peasant leader Rubén Jaramillo and his family by the Mexican army.
Although his presidency has been criticized, it has its defenders. López Mateos was born in Atizapán de Zaragoza, now called Ciudad López Mateos, to Mariano Gerardo López y Sánchez Roman, a dentist, Elena Mateos y Vega, a teacher. According to official records, a small town in the state of México, though at a young age his family moved to Mexico City upon his father's death. There is a birth certificate and several testimonies archived at El Colegio de México that place his birth on 10 September 1909, in Patzicía, Guatemala. In 1929, he graduated from the Scientific and Literary Institute of Toluca, where he was a delegate and student leader of the anti-re-electionist campaign of former Minister of Education, José Vasconcelos, who ran in opposition to Pascual Ortiz Rubio, handpicked by former President Plutarco Elías Calles. Calles had founded the Partido Nacional Revolucionario in the wake of the assassination of President-elect Alvaro Obregón. After Vasconcelos's defeat, López Mateos attended law school at UNAM and shifted his political allegiance to the PNR.
Early in his career, he served as the private secretary to Col. Filiberto Gómez, the governor of the state of Mexico. In 1929, as a speaker he supported the presidential campaign of José Vasconcelos, an opposition candidate, against the presidential campaign of Pascual Ortiz Rubio. In 1934, he became the private secretary of the president of the Partido Nacional Revolucionario, Carlos Riva Palacio, he filled a number of bureaucratic positions from until 1941, when he met Isidro Fabela. Fabela helped him into a position as the director of the Literary Institute of Toluca after Fabela resigned the post to join the International Court of Justice. López Mateos became a senator of the state of Mexico in 1946, while at the same time serving as Secretary General of the PRI, he organized the presidential campaign of PRI candidate Adolfo Ruiz Cortines and was subsequently appointed Secretary of Labor in his new cabinet. He did an exemplary job, for the first and only time, a Secretary of Labor was tapped to be the PRI's candidate for the presidency.
As the candidate for the dominant party with only weak opposition, López Mateos won election, serving as president until 1964. As president of Mexico, along with his predecessor Ruiz Cortines, López Mateos continued the outline of policies by President Miguel Alemán, who set Mexico's post-World War II strategy. Alemán favored the interests of capital over labor. All three were heirs to the legacy of the Mexican Revolution, but all were too young to have participated directly. In the sphere of foreign policy, López Mateos charted a course of independence from the U. S. but cooperation on some issues and opposition to the hostile U. S. policy toward the 1959 Cuban Revolution. López Mateos sought the continuation of industrial growth in Mexico characterized as the Mexican Miracle, but this required the cooperation of organized labor. Organized labor was restive, it was a sector of the Institutional Revolutionary Party and controlled through the Confederation of Mexican Workers, led by Fidel Velázquez.
However, unions pushed back against government control and sought gains in wages, working conditions, more independence from so-called charro union leaders, who followed government and party dictates. Although López Mateos had had success when served as his predecessor's Secretary of Labor, as president, he was faced with major labor unrest; the previous strategy of playing off one labor organization against another, such as the CTM, the Revolutionary Confederation of Workers and Peasants, the General Union of Workers and Peasants of Mexico fell apart. In July 1958, the militant railway workers' union, under the leadership of Demetrio Vallejo and Valentín Campa, began a series of strikes for better wages, culminating in an major strike during Holy Week 1959; the Easter holiday was when many Mexicans traveled by train, so the choice of the date was designed for maximum impact on the general public. López Mateos depended on his forceful cabinet minister Gustavo Díaz Ordaz to deal with the striking railway workers.
The government filled Lecumberri Penitentiary. Valentín Campa and Demetrio Vallejo were given lengthy prison sentences for violating Article 145 of the Mexican Constitution for the crime of "social dissolution"; the article empowered the government to imprison "whomever it decided to consider an enemy of Mexico." Imprisoned for that crime was Mexican muralist Da
El Paso, Texas
El Paso is a city in and the county seat of El Paso County, United States, in the far western part of the state. The 2017 population estimate for the city from the U. S. Census was 683,577, its metropolitan statistical area covers all of El Paso and Hudspeth counties in Texas, has a population of 844,818. El Paso stands on the Rio Grande across the Mexico–United States border from Ciudad Juárez, the most populous city in the Mexican state of Chihuahua with 1.4 million people. Las Cruces, in the neighboring U. S. state of New Mexico, has a population of 215,579. On the U. S. side, El Paso metropolitan area forms part of the larger El Paso–Las Cruces CSA, with a population of 1,060,397. Bi-nationally, these three cities form a combined international metropolitan area sometimes referred to as the Paso del Norte or the Borderplex; the region of 2.5 million people constitutes the largest bilingual and binational work force in the Western Hemisphere. The city is home to three publicly traded companies, former Western Refining, now Andeavor. as well as home to the Medical Center of the Americas, the only medical research and care provider complex in West Texas and Southern New Mexico, the University of Texas at El Paso, the city's primary university.
The city hosts the annual Sun Bowl college football post-season game, the second oldest bowl game in the country. El Paso has a strong military presence. William Beaumont Army Medical Center, Biggs Army Airfield, Fort Bliss call the city home. Fort Bliss is one of the largest military complexes of the United States Army and the largest training area in the United States. Headquartered in El Paso are the DEA domestic field division 7, El Paso Intelligence Center, Joint Task Force North, United States Border Patrol El Paso Sector, the U. S. Border Patrol Special Operations Group. In 2010 and 2018, El Paso received an All-America City Award. El Paso ranked in the top three safest large cities in the United States between 1997 and 2014, including holding the title of safest city between 2011 and 2014; the El Paso region has had human settlement for thousands of years, as evidenced by Folsom points from hunter-gatherers found at Hueco Tanks. The evidence suggests 10,000 to 12,000 years of human habitation.
The earliest known cultures in the region were maize farmers. When the Spanish arrived, the Manso and Jumano tribes populated the area; these were subsequently incorporated into the Mestizo culture, along with immigrants from central Mexico, captives from Comanchería, genízaros of various ethnic groups. The Mescalero Apache were present. Spanish explorer Don Juan de Oñate was born in 1550 in Zacatecas, Zacatecas and was the first New Spain explorer known to have observed the Rio Grande near El Paso, in 1598, celebrating a Thanksgiving Mass there on April 30, 1598. However, the four survivors of the Narváez expedition, Álvar Núñez Cabeza de Vaca, Alonso del Castillo Maldonado, Andrés Dorantes de Carranza, his enslaved Moor Estevanico, are thought to have passed through the area in the mid-1530s. El Paso del Norte was founded on the south bank of the Río Bravo del Norte, in 1659 by Fray Garcia de San Francisco. In 1680, the small village of El Paso became the temporary base for Spanish governance of the territory of New Mexico as a result of the Pueblo Revolt, until 1692 when Santa Fe was reconquered and once again became the capital.
The Texas Revolution was not felt in the region, as the American population was small. However, the region was claimed by Texas as part of the treaty signed with Mexico and numerous attempts were made by Texas to bolster these claims. However, the villages which consisted of what is now El Paso and the surrounding area remained a self-governed community with both representatives of the Mexican and Texan government negotiating for control until Texas irrevocably took control in 1846. During this interregnum, 1836–1848, Americans nonetheless continued to settle the region; as early as the mid-1840s, alongside long extant Hispanic settlements such as the Rancho de Juan María Ponce de León, Anglo settlers such as Simeon Hart and Hugh Stephenson had established thriving communities of American settlers owing allegiance to Texas. Stephenson, who had married into the local Hispanic aristocracy, established the Rancho de San José de la Concordia, which became the nucleus of Anglo and Hispanic settlement within the limits of modern-day El Paso, in 1844: the Republic of Texas, which claimed the area, wanted a chunk of the Santa Fe trade.
The Treaty of Guadalupe Hidalgo made the settlements on the north bank of the river part of the US, separate from Old El Paso del Norte on the Mexican side. The present Texas–New Mexico boundary placing El Paso on the Texas side was drawn in the Compromise of 1850. El Paso remained the largest settlement in New Mexico as part of the Republic of Mexico until its cession to the U. S. in 1848, when the Treaty of Guadalupe Hidalgo specified the border was to run north of El Paso De Norte around the Ciudad Juárez Cathedral which became part of the state of Chihuahua. El Paso County was established in March 1850, with San Elizario as the first county seat; the United States Senate fixed a boundary between Texas and New Mexico at the 32nd parallel, thus ignoring history and topography. A military post called "The Post opposite El Paso" was established in 1849 on Coons' Rancho beside the settlement of Franklin, which became the nucleus of the future El Paso, Texas.
Presidio is a city in Presidio County, United States. It stands on the Rio Grande, on the opposite side of the U. S.–Mexico border from Ojinaga, Chihuahua. The name originates from the Spanish and means "jail"; the population was 4,167 at the 2000 census, had increased to 4,426 as of the 2010 US census. Presidio is on the Farm to Market Road 170, U. S. Route 67, 18 miles south of Shafter in Presidio County. Presidio is about 250 miles southeast of El Paso, 240 miles southwest of Odessa, 145 miles northeast of Chihuahua City; the junction of the Rio Conchos and Rio Grande at Presidio was settled thousands of years ago by hunting and gathering peoples. By 1200 AD, the local Native Americans had adopted agriculture and lived in small knit settlements, which the Spaniards called pueblos; the first Spaniards came to Presidio in 1535 CE, Álvar Núñez Cabeza de Vaca and his three companions stopped at the Native American pueblo, placed a cross on the mountainside, called the village La Junta de las Cruces.
On December 10, 1582, Antonio de Espejo and his company arrived at the site and called the pueblo San Juan Evangelista. By 1681, the area of Presidio was known as the Junction of the Rivers. Five Jumano towns were located along the Rio Grande to the north of the junction, consisting of permanent houses. In 1683, Juan Sabeata, the chief of the Jumano nation, reported having seen a fiery cross on the mountain at Presidio and requested that a mission be established at La Junta; the settlement in 1684 became known as La Navidad en Las Cruces. The missions La Navidad en las Cruces, San Francisco de los Julimes, San Antonio de los Puliques, Apostol Santiago, Santa María de la Redonda may have been established on the Texas side of the Rio Grande at La Junta. About 1760, a penal colony and military garrison of 60 men were established near Presidio. In 1830, the name of the area around Presidio was changed from La Junta de los Rios to Presidio del Norte. White American settlers came to Presidio in 1848 after the Mexican War.
Among them was John Spencer, who operated a horse ranch on the United States side of the Rio Grande near Presidio. Ben Leaton and Milton Faver, former scalp hunters for the Mexican government, built private forts in the area. During the Mexican Revolution, General Pancho Villa used Ojinaga as his headquarters for operations and visited Presidio on numerous occasions. In 1849, a Comanche raid destroyed Presidio, in 1850, Indians drove off most of the cattle in town. A post office was established at Presidio in 1868, the first public school was opened in 1887. In 1897, President William McKinley appointed George B. Jackson, an African American former buffalo soldier, as customs collector at Presidio, a position he held until his death in 1900. Jackson, a businessman from San Angelo, was considered the "wealthiest colored man in Texas" in the second half of the 19th century; as a result of General Francisco "Pancho" Villa's force's raid and capture of Ojinaga on January 10, 1914, many Mexican army troops and civilians fled to Presidio, seeking safe-haven.
U. S. forces detained 2,000 Mexican refugees in Presidio marching them north 60 miles to Camp Marfa. The refugees would be sent by train to Ft. Bliss. In 1930, the Kansas City and Orient Railway reached Presidio; the population grew from 96 in 1925 to 1,671 in 1988, but the number of businesses declined from 70 in 1933 to 22 in 1988. At the end of 1988, Presidio experienced a population boom, due in part to undocumented immigrants enrolled in the amnesty program; the population in 1990 was 3,422. Despite Presidio's having been occupied continuously since ancient times, the community was incorporated in 1980, with Herb Myers elected as Presidio's first mayor; the 1959 movie Rio Bravo featured the town. In 1986, the Texas Department of Transportation opened a two-lane bridge, connecting Presidio and Ojinaga. By 2019, a second span will be constructed, with the original bridge being rebuilt; the increased bridge capacity is projected to meet higher traffic commercial and agricultural in nature. As of 2007, Presidio's local economy is based upon employment at Presidio Independent School District, United States Customs and Border Protection, local retail businesses.
Presidio was home to several truck-farming operations, focused on onions and cantaloupes. Those operations ceased in the late 1990s. In 2010, Presidio built the world's largest sodium-sulfur battery to provide power when the city's lone line to the United States power grid goes down. Presidio is located at 29°33′41″N 104°21′59″W. According to the United States Census Bureau, the city has a total area of 2.6 square miles, all land. Presidio is located near the confluence of the Rio Grande; the Rio Conchos flows in a northeasterly direction from its source in the Sierra Madre in the state of Chihuahua, Mexico. Referred to as "La Junta", the two rivers resulted in plentiful water, creating a flood plain, ideal for farming. Coordinates: 29.13444°N 104.37139°W / 29.13444. The population density was 1,620.1 people per square mile. There were 1,541 housing units at an average density of 599.1 per square mile. The racial makeup of the city was 83.39% White, 0.10% African American, 0.14% Native American, 0.05% Asian, 0.02% Pacific Islander, 15.43% from other races, 0.86% from two or more races.
Hispanics or Latinos of any race were 94.12% of the population. Of the 1,285 households, 49.3%
Mexico–United States border
The Mexico–United States border is an international border separating Mexico and the United States, extending from the Pacific Ocean in the west to the Gulf of Mexico in the east. The border traverses a variety of terrains; the Mexico–US border is the most crossed border in the world, with 350 million documented crossings annually. The total length of the continental border is 3,145 kilometers. From the Gulf of Mexico, it follows the course of the Rio Grande to the border crossing at Ciudad Juárez, El Paso, Texas. Westward from El Paso–Juárez, it crosses vast tracts of the Chihuahuan and Sonoran deserts to the Colorado River Delta and San Diego–Tijuana, before reaching the Pacific Ocean; the Mexico–United States border extends 3,145 kilometers, in addition to the maritime boundaries of 29 kilometers in the Pacific Ocean and 19 kilometers in the Gulf of Mexico. According to the International Boundary and Water Commission, the continental border follows the middle of the Rio Grande—according to the 1848 Treaty of Guadalupe Hidalgo between the two nations, "along the deepest channel" —from its mouth on the Gulf of Mexico a distance of 2,020 kilometers to a point just upstream of El Paso and Ciudad Juárez.
It follows an alignment westward overland and it is marked by monuments for a distance of 859 kilometers to the Colorado River, when it reaches its highest elevation at the intersection with the Continental Divide. It follows the middle of that river toward the north with a distance of 39 kilometers, follows an alignment overland toward the west and marked by monuments with a distance of 227 kilometers to the Pacific Ocean. Per the La Paz Agreement, the official "border area" extends 100 kilometers "on either side of the inland and maritime boundaries" from the Gulf of Mexico west into the Pacific Ocean. There is a 100-mile border zone; the Rio Grande meanders along the Texas–Mexico border. As a result, the United States and Mexico have a treaty by which the Rio Grande is maintained as the border, with new cut-offs and islands being transferred to the other nation as necessary; the Boundary Treaty of 1970 between Mexico and the United States settled all outstanding boundary disputes and uncertainties related to the Rio Grande border.
The region is characterized by deserts, rugged hills, abundant sunshine, two major rivers—the Colorado and the Rio Grande. The U. S. states along the border, from west to east, are California, New Mexico, Texas. The Mexican states along the border are Baja California, Chihuahua, Nuevo León, Tamaulipas. Among the U. S. states, Texas has the longest stretch of the border with Mexico, while California has the shortest. Among the states in Mexico, Chihuahua has the longest border with the United States, while Nuevo León has the shortest. Texas borders four Mexican states—Tamaulipas, Nuevo León, Chihuahua—the most of any U. S. states. New Mexico and Arizona each borders two Mexican states. California borders only Baja California. Three Mexican states border two U. S. states each: Baja California borders California and Arizona. Tamaulipas, Nuevo León, Coahuila each borders only one U. S. state: Texas. Along the border are 23 U. S. counties and 39 Mexican municipalities. The border separating Mexico and the United States is the most crossed international boundary in the world, with 350 million legal crossings taking place annually.
There are 48 U. S.–Mexico border crossings, with 330 ports of entry. At these points of entry, people trying to get into the U. S. are required to open their bags for inspection. Border crossings take place by roads, pedestrian walkways and ferries. From west to east, below is a list of the border city "twinnings"; the total population of the borderlands—defined as those counties and municipios lining the border on either side—stands at some 12 million people. The Mexico–United States border is the world's most transited border; the San Ysidro Port of Entry is located between San Ysidro and Tijuana, Baja California. 50,000 vehicles and 25,000 pedestrians use this entry daily. Due to business of this entry port, it has influenced the every day life-style of people that live in these border towns; the world's busiest border is having an impact on communities on both sides of the border. The average wait time to cross into the United States is an hour. Having thousands of vehicles transit through the border every day is causing air pollution in San Ysidro and Tijuana.
The emission of carbon monoxide and other vehicle related air contaminants have been linked to health complications such as cardiovascular disease, lung cancer, birth outcomes, premature death, obesity and other respiratory diseases. Due to the high levels of traffic collusion and the extended wait times, mental health is impacted by the border's business, affecting the person's stress levels and aggressive behavior; the San Ysidro border is militarized, separated by three walls, border patrol agents and ICE. Tijuana is the next target for San Diegan developers due to the fast-growing city, its lower cost of living, cheap prices and proximity to San Diego. While this would benefit the tourist aspect of the city, it is damaging to low-income residents that will no longer be able to