1.
Geographic coordinate system
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A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position. A common choice of coordinates is latitude, longitude and elevation, to specify a location on a two-dimensional map requires a map projection. The invention of a coordinate system is generally credited to Eratosthenes of Cyrene. Ptolemy credited him with the adoption of longitude and latitude. Ptolemys 2nd-century Geography used the prime meridian but measured latitude from the equator instead. Mathematical cartography resumed in Europe following Maximus Planudes recovery of Ptolemys text a little before 1300, in 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, the Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911, the latitude of a point on Earths surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the equator, the north pole is 90° N, the south pole is 90° S. The 0° parallel of latitude is designated the equator, the plane of all geographic coordinate systems. The equator divides the globe into Northern and Southern Hemispheres, the longitude of a point on Earths surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses, which converge at the north and south poles, the prime meridian determines the proper Eastern and Western Hemispheres, although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E, the combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The grid formed by lines of latitude and longitude is known as a graticule, the origin/zero point of this system is located in the Gulf of Guinea about 625 km south of Tema, Ghana. To completely specify a location of a feature on, in, or above Earth. Earth is not a sphere, but a shape approximating a biaxial ellipsoid. It is nearly spherical, but has an equatorial bulge making the radius at the equator about 0. 3% larger than the radius measured through the poles, the shorter axis approximately coincides with the axis of rotation
2.
San Luis Rey River
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The San Luis Rey River is a river in northern San Diego County, California. The rivers headwaters are in the Palomar Mountain Range and Cleveland National Forest, near Palomar Mountain, the river mouth, on the Pacific Ocean, is in northern Oceanside. The San Luis Rey River bike path runs along it for its last 9 miles, the river is over 69 miles long and drains 562 square miles. There is little water in the river during most of the year, the San Luis Rey River rises in two main branches. The mainstem starts east of Rocky Mountain in the Cleveland National Forest, the West Forks headwaters rise as a pair of tiny streams, Fry Creek and Iron Springs Creek, just to the north of Palomar Mountain. These two streams combine into the West Fork, which flows southeast through the Mendenhall Valley, the West Fork joins the main stem at Lake Henshaw, a reservoir formed by a dam across the main stem San Luis Rey River. From the base of Henshaw Dam, the river winds west along the foot of the Palomars and it then bends southwest into a gorge. It leaves the canyon at the wide and spacious Pauma Valley, potrero and Pauma Creeks enter from the right, then Frey Creek and Agua Tibia Creek as the river travels northwest. The river turns west, passing Pala, flowing through a patchwork of privately owned, government-owned and it then crosses under Interstate 15 and exits the foothills of the mountains near Bonsall. After passing Bonsall the river flows generally southwest, through the cities of San Luis Rey and Oceanside. Although usually dry up to point the river starts to contain water as it nears the mouth, both from seeps and from tidal activity that forms a lagoon at the mouth of the river. The San Luis Rey empties into the Pacific north of Oceanside, about 2 miles south of the Santa Margarita River, the dam that forms Lake Henshaw is the only one directly on the river itself. However, tributaries in the watershed are extensively dammed. The San Luis Rey River has natural river banks, except for the last 7 miles where it flows through a 400-foot-wide earthen channel with levees to prevent stormwater from flooding Oceanside, urbanization, mining, and agriculture have caused substantial deterioration of water quality the drainage basin. Since Lake Henshaw is relatively close to the headwaters, it is a source of drinking water, however, the water in the lower reaches of the river is used for groundwater recharge only. A bridge was completed across the river near its mouth in 2009 and they are a southern tribe of the indigenous peoples of California. The first European land exploration of Alta California, the Spanish Portolà expedition, on the return journey to the new pueblo of San Diego, the party again camped near the river on January 22,1770. Franciscan missionary Juan Crespi noted in his diary. we descended to a large and beautiful valley and we crossed it straight to the north and pitched camp near a large pool of water, one of several in the plain
3.
San Diego County, California
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San Diego County is a county in the southwestern corner of the state of California, in the United States. As of the 2010 census, the population was 3,095,313, making it Californias second-most populous county and the fifth-most populous in the United States. Its county seat is San Diego, the eighth-most populous city in the United States and it is the south-westernmost county in the 48 contiguous United States. San Diego County comprises the San Diego-Carlsbad Metropolitan Statistical Area, San Diego is also part of the San Diego–Tijuana metropolitan area, the largest metropolitan area shared between the United States and Mexico. Greater San Diego ranks as the 38th largest metropolitan area in the Americas, San Diego County has 70 miles of coastline. Most of the county has a mild Mediterranean climate to climate, though there are mountains that receive frost. There are also 16 naval and military installations of the U. S. Navy, U. S. Marine Corps, and these include the Naval Base San Diego, Marine Corps Base Camp Pendleton, Marine Corps Air Station Miramar, and Naval Air Station North Island. From north to south, San Diego County extends from the borders of Orange County and Riverside County to the Mexico–United States border. From west to east, San Diego County stretches from the Pacific Ocean to its boundary with Imperial County, the area which is now San Diego County has been inhabited for more than 10,000 years by Kumeyaay, Luiseño, Cupeño and Cahuilla Indians. In 1542, the Portuguese-born explorer Juan Rodríguez Cabrillo, sailing for Spain, claimed San Diego Bay for the Spanish Empire, and he named the site San Miguel. In November 1602, Sebastián Vizcaíno surveyed the harbor and what are now Mission Bay and Point Loma and named the area for Saint Didacus, a Spaniard more commonly known as San Diego. European settlement in what is now San Diego County began with the founding of the San Diego Presidio and Mission San Diego de Alcalá by Spanish soldiers and this county was part of Alta California under the Viceroyalty of New Spain until the Mexican declaration of independence. From 1821 through 1848 this area was part of Mexico, San Diego County became part of the United States as a result of the Treaty of Guadalupe Hidalgo in 1848, ending the U. S. -Mexican War. San Diego County was one of the counties of California. At the time of its establishment in 1850, San Diego County was relatively large, as such it included areas of what are now Inyo County and San Bernardino County, as well as all of what is now Riverside County and Imperial County. During the later part of the 19th century, there were changes in the boundaries of San Diego County. The most recent changes were the establishments of Riverside County in 1893, according to the U. S. Census Bureau, the county has an area of 4,526 square miles, of which 4,207 square miles is land and 319 square miles is water. The county is larger in area than the states of Rhode Island
4.
Fallbrook, California
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Fallbrook is an unincorporated community in northern San Diego County, California. The Fallbrook census-designated place population was 30,534 at the 2010 census, fallbrooks downtown is not on any major highway route. It is 6 miles west of Interstate 15 or 5 miles north of State Route 76, Fallbrook is situated immediately east of the U. S. Marine Corps Camp Pendleton. It once housed a stagecoach stop for the stage ran from Temecula to San Diego. Fallbrook is known for its groves and claims the title Avocado Capital of the World. It is often called or known as The Friendly Village, the Avocado Festival is held in the downtown strip annually and frequently draws large crowds. Fallbrook has an art community with Fallbrook School of the Arts, numerous art galleries, c.30 pieces of public art. The community of Fallbrook began in the area today as Live Oak County Park. The first permanent recorded settlement was in 1869, when the Vital Reche family settled here and they named the new community Fall Brook after their former homestead in Pennsylvania. The present town site was plotted in 1885, the original Fallbrook School, though closed as a school in 1939, still serves the community as the Reche Clubhouse. One of the churches was constructed in 1890 and is still in use today. Oak trees were the primary trees in Fallbrook. Olives became a major crop by the 1920s and continued through World War II, there are over sixty wholesale and retail nurseries in the community. Incorporation votes occurred in 1981 and 1987, but both votes failed, Fallbrook has an average year-round temperature of 61 degrees. Due to the ocean breezes, the humidity is relatively low. The average daytime high in Fallbrook is 76 degrees, although in the summer, most of the area is frost-free, during the coldest periods the average nighttime temperature is about 42 degrees. Due to its proximity to the ocean, days start with early morning fog. Annual rainfall is roughly 10 inches and comes mostly between November and April, rainfall is higher in the surrounding hills, up to 20 inches
5.
2000 United States Census
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This was the twenty-second federal census and was at the time the largest civilly administered peacetime effort in the United States. Approximately 16 percent of households received a form of the 2000 census. Full documentation on the 2000 census, including forms and a procedural history, is available from the Integrated Public Use Microdata Series. Microdata from the 2000 census is available through the Integrated Public Use Microdata Series. Aggregate data for small areas, together with electronic boundary files, personally identifiable information will be available in 2072. The U. S. resident population includes the number of people in the 50 states. The Bureau also enumerated the residents of the U. S. territory of Puerto Rico, its population was 3,808,610, the 2000 Census was the first time survey options for multiracial Americans were provided. S. Households had access to computers, 42% have Internet access, regionally, the South and West experienced the bulk of the nations population increase,14,790,890 and 10,411,850, respectively. This meant that the center of U. S. population moved to Phelps County. The Northeast grew by 2,785,149, the Midwest by 4,724,144, the results of the census are used to determine how many congressional districts each state is apportioned. Congress defines the formula, in accordance with Title 2 of the U. S. Code, each member of the House represents a population of about 647,000. The populations of the District of Columbia and Puerto Rico are excluded from the apportionment population because they do not have voting seats in the U. S, since the first census in 1790, the decennial count has been the basis for the United States representative form of government. Article I, Section II specifies that The Number of Representatives shall not exceed one for every thirty Thousand, in 1790, each member of the House represented about 34,000 residents. Since then, the House more than quadrupled in size, today, each member represents about 20 times as many constituents. This recommendation was followed by the Secretary of Commerce, after the census was tabulated, Utah challenged the results in two different ways. Utah was extremely close to gaining a fourth seat, falling 857 people short. The margin was later shortened to 80 people, after the government discovered that it overcounted the population of North Carolina by 2,673 residents. Utah claimed that individuals traveling abroad as religious missionaries should be counted as residents, almost half of all Mormon missionaries, more than 11,000 individuals, were from Utah, only 102 came from North Carolina
6.
Native Americans in the United States
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In the United States, Native Americans are people descended from the Pre-Columbian indigenous population of the land within the countrys modern boundaries. These peoples were composed of distinct tribes, bands, and ethnic groups. Most Native American groups had historically preserved their histories by oral traditions and artwork, at the time of first contact, the indigenous cultures were quite different from those of the proto-industrial and mostly Christian immigrants. Some of the Northeastern and Southwestern cultures in particular were matrilineal, the majority of Indigenous American tribes maintained their hunting grounds and agricultural lands for use of the entire tribe. Europeans at that time had patriarchal cultures and had developed concepts of property rights with respect to land that were extremely different. Assimilation became a consistent policy through American administrations, during the 19th century, the ideology of manifest destiny became integral to the American nationalist movement. Expansion of European-American populations to the west after the American Revolution resulted in increasing pressure on Native American lands and this resulted in the ethnic cleansing of many tribes, with the brutal, forced marches coming to be known as The Trail of Tears. As American expansion reached into the West, settler and miner migrants came into increasing conflict with the Great Basin, Great Plains and these were complex nomadic cultures based on horse culture and seasonal bison hunting. Over time, the United States forced a series of treaties and land cessions by the tribes, in 1924, Native Americans who were not already U. S. citizens were granted citizenship by Congress. Contemporary Native Americans have a relationship with the United States because they may be members of nations, tribes. The terms used to refer to Native Americans have at times been controversial, by comparison, the indigenous peoples of Canada are generally known as First Nations. It is not definitively known how or when the Native Americans first settled the Americas and these early inhabitants, called Paleoamericans, soon diversified into many hundreds of culturally distinct nations and tribes. The archaeological periods used are the classifications of archaeological periods and cultures established in Gordon Willey and Philip Phillips 1958 book Method and they divided the archaeological record in the Americas into five phases, see Archaeology of the Americas. The Clovis culture, a hunting culture, is primarily identified by use of fluted spear points. Artifacts from this culture were first excavated in 1932 near Clovis, the Clovis culture ranged over much of North America and also appeared in South America. The culture is identified by the distinctive Clovis point, a flaked flint spear-point with a notched flute, dating of Clovis materials has been by association with animal bones and by the use of carbon dating methods. Recent reexaminations of Clovis materials using improved carbon-dating methods produced results of 11,050 and 10,800 radiocarbon years B. P, other tribes have stories that recount migrations across long tracts of land and a great river, believed to be the Mississippi River. Genetic and linguistic data connect the people of this continent with ancient northeast Asians
7.
United States
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Forty-eight of the fifty states and the federal district are contiguous and located in North America between Canada and Mexico. The state of Alaska is in the northwest corner of North America, bordered by Canada to the east, the state of Hawaii is an archipelago in the mid-Pacific Ocean. The U. S. territories are scattered about the Pacific Ocean, the geography, climate and wildlife of the country are extremely diverse. At 3.8 million square miles and with over 324 million people, the United States is the worlds third- or fourth-largest country by area, third-largest by land area. It is one of the worlds most ethnically diverse and multicultural nations, paleo-Indians migrated from Asia to the North American mainland at least 15,000 years ago. European colonization began in the 16th century, the United States emerged from 13 British colonies along the East Coast. Numerous disputes between Great Britain and the following the Seven Years War led to the American Revolution. On July 4,1776, during the course of the American Revolutionary War, the war ended in 1783 with recognition of the independence of the United States by Great Britain, representing the first successful war of independence against a European power. The current constitution was adopted in 1788, after the Articles of Confederation, the first ten amendments, collectively named the Bill of Rights, were ratified in 1791 and designed to guarantee many fundamental civil liberties. During the second half of the 19th century, the American Civil War led to the end of slavery in the country. By the end of century, the United States extended into the Pacific Ocean. The Spanish–American War and World War I confirmed the status as a global military power. The end of the Cold War and the dissolution of the Soviet Union in 1991 left the United States as the sole superpower. The U. S. is a member of the United Nations, World Bank, International Monetary Fund, Organization of American States. The United States is a developed country, with the worlds largest economy by nominal GDP. It ranks highly in several measures of performance, including average wage, human development, per capita GDP. While the U. S. economy is considered post-industrial, characterized by the dominance of services and knowledge economy, the United States is a prominent political and cultural force internationally, and a leader in scientific research and technological innovations. In 1507, the German cartographer Martin Waldseemüller produced a map on which he named the lands of the Western Hemisphere America after the Italian explorer and cartographer Amerigo Vespucci
8.
California
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California is the most populous state in the United States and the third most extensive by area. Located on the western coast of the U. S, California is bordered by the other U. S. states of Oregon, Nevada, and Arizona and shares an international border with the Mexican state of Baja California. Los Angeles is Californias most populous city, and the second largest after New York City. The Los Angeles Area and the San Francisco Bay Area are the nations second- and fifth-most populous urban regions, California also has the nations most populous county, Los Angeles County, and its largest county by area, San Bernardino County. The Central Valley, an agricultural area, dominates the states center. What is now California was first settled by various Native American tribes before being explored by a number of European expeditions during the 16th and 17th centuries, the Spanish Empire then claimed it as part of Alta California in their New Spain colony. The area became a part of Mexico in 1821 following its war for independence. The western portion of Alta California then was organized as the State of California, the California Gold Rush starting in 1848 led to dramatic social and demographic changes, with large-scale emigration from the east and abroad with an accompanying economic boom. If it were a country, California would be the 6th largest economy in the world, fifty-eight percent of the states economy is centered on finance, government, real estate services, technology, and professional, scientific and technical business services. Although it accounts for only 1.5 percent of the states economy, the story of Calafia is recorded in a 1510 work The Adventures of Esplandián, written as a sequel to Amadis de Gaula by Spanish adventure writer Garci Rodríguez de Montalvo. The kingdom of Queen Calafia, according to Montalvo, was said to be a land inhabited by griffins and other strange beasts. This conventional wisdom that California was an island, with maps drawn to reflect this belief, shortened forms of the states name include CA, Cal. Calif. and US-CA. Settled by successive waves of arrivals during the last 10,000 years, various estimates of the native population range from 100,000 to 300,000. The Indigenous peoples of California included more than 70 distinct groups of Native Americans, ranging from large, settled populations living on the coast to groups in the interior. California groups also were diverse in their organization with bands, tribes, villages. Trade, intermarriage and military alliances fostered many social and economic relationships among the diverse groups, the first European effort to explore the coast as far north as the Russian River was a Spanish sailing expedition, led by Portuguese captain Juan Rodríguez Cabrillo, in 1542. Some 37 years later English explorer Francis Drake also explored and claimed a portion of the California coast in 1579. Spanish traders made unintended visits with the Manila galleons on their trips from the Philippines beginning in 1565
United States (
California)
