Niger or the Niger the Republic of the Niger, is a landlocked country in West Africa named after the Niger River. Niger is bordered by Libya to the northeast, Chad to the east, Nigeria to the south, Benin to the southwest, Burkina Faso and Mali to the west, Algeria to the northwest. Niger covers a land area of 1,270,000 km2, making it the largest country in West Africa. Over 80% of its land area lies in the Sahara Desert; the country's predominantly Islamic population of about 21 million live in clusters in the far south and west of the country. The capital city is Niamey, located in Niger's southwest corner. Niger is a developing country, which ranks near the bottom in the United Nations' Human Development Index. Much of the non-desert portions of the country are threatened by periodic drought and desertification; the economy is concentrated around subsistence, with some export agriculture in the more fertile south, export of raw materials uranium ore. Niger faces serious challenges to development due to its landlocked position, desert terrain, inefficient agriculture, high fertility rates without birth control, the resulting overpopulation, the poor educational level and poverty of its people, lack of infrastructure, poor healthcare, environmental degradation.
Nigerien society reflects a diversity drawn from the long independent histories of its several ethnic groups and regions and their short period living in a single state. What is now Niger has been on the fringes of several large states. Since independence, Nigeriens have lived under five constitutions and three periods of military rule. After the military coup in 2010, Niger became a multi-party state. A majority of the population lives in rural areas, have little access to advanced education. Early human settlement in Niger is evidenced by numerous archaeological remains. In prehistoric times, the climate of the Sahara was wet and provided favorable conditions for agriculture and livestock herding in a fertile grassland environment five thousand years ago. In 2005–06, a graveyard in the Ténéré desert was discovered by Paul Sereno, a paleontologist from the University of Chicago, his team discovered 5,000-year-old remains of two children in the Ténéré Desert. The evidence along with remains of animals that do not live in desert are among the strongest evidence of the'green' Sahara in Niger.
It is believed that progressive desertification around 5000 BC pushed sedentary populations to the south and south-east. By at least the 5th century BC, Niger had become an area of trans-Saharan trade, led by the Berber tribes from the north, who used camels as a well-adapted means of transportation through the desert; this trade made Agadez a pivotal place of the trans-Saharan trade. This mobility, which would continue in waves for several centuries, was accompanied with further migration to the south and interbreeding between southern black and northern white populations, it was aided by the introduction of Islam to the region at the end of the 7th century. Several empires and kingdoms flourished during this era, up to the beginning of colonization in Africa; the Songhai Empire was an empire bearing the name of its main ethnic group, the Songhai or Sonrai, located in western Africa on the bend of the Niger River in present-day Niger and Burkina Faso. In the 7th century, Songhai tribes settled down north of modern-day Niamey and founded the Songhai city-states of Koukia and Gao.
By the 11th century, Gao had become the capital of the Songhai Empire. From 1000 to 1325, The Songhai Empire prospered and managed to maintain peace with its neighboring empires including the Mali Empire. In 1325 the Songhai Empire was conquered by the Mali Empire but was freed in 1335 by prince Ali Kolen and his brother, Songhai princes held captive by Moussa Kankan, the ruler of the Mali Empire. From the mid-15th to the late 16th century, Songhai was one of the largest Islamic empires in history. Between the Niger River and Lake Chad lay Hausa kingdoms and fertile areas; these kingdoms flourished from the mid-14th century up until the early 19th century, when they were conquered by Usman dan Fodio, founder of the Sokoto Empire. The Hausa kingdoms were not a compact entity but several federations of kingdoms more or less independent of one other, their organization was somewhat democratic: the Hausa kings were elected by the notables of the country and could be removed by them. The Hausa Kingdoms began as seven states founded according to the Bayajidda legend by the six sons of Bawo.
Bawo was the only son of the Hausa queen Bayajidda or who came from Baghdad. The seven original Hausa states were: Daoura, Rano, Gobir and Biram; the Mali Empire was a Mandinka empire founded by Sundiata Keita circa 1230 that existed up to 1600. At its peak circa 1350, the empire extended as far west as Senegal and Guinee Conakry and as far east as western Niger; the Kanem-Bornu Empire was an empire that existed in modern-day Chad, Cameroon and Libya. The empire first existed and prospered as the Kanem Empire as early as the 9th century and as the Kingdom of Bornu until 1900. In the 19th century, contact with Europe began with the first European explorers—notably Monteil and Barth —to travel to Niger. Following the 1885 Berlin conference during which colonial powers outlined the division of Africa into colonial spheres, French military efforts to conquer existing African states were intensified in all French colo
Horn of Africa
The Horn of Africa is a peninsula in Northeast Africa. It extends hundreds of kilometers into the Arabian Sea and lies along the southern side of the Gulf of Aden; the area is the easternmost projection of the African continent. Referred to in ancient and medieval times as the land of the Barbara and Habesha, the Horn of Africa denotes the region containing the countries of Djibouti, Eritrea and Somalia, it covers 2 million km2 and is inhabited by 115 million people. Regional studies on the Horn of Africa are carried out, among others, in the fields of Ethiopian Studies as well as Somali Studies; this peninsula is known by various names. In ancient and medieval times, the Horn of Africa was referred to as the Bilad al Barbar, it is known as the Somali peninsula, or in the Somali language, Geeska Afrika, Jasiiradda Soomaali or Gacandhulka Soomaali. In other languages that are local or adjacent to the Horn of Africa, it is known as የአፍሪካ ቀንድ yäafrika qänd in Amharic, القرن الأفريقي al-qarn al-'afrīqī in Arabic, Gaaffaa Afriikaa in Oromo and ቀርኒ ኣፍሪቃ in Tigrinya.
The Horn of Africa is sometimes shortened to HOA. The Horn of Africa is quite designated the "Horn", while inhabitants are sometimes colloquially referred to as Horn Africans. Sometimes the term Greater Horn of Africa is used, either to be inclusive of neighbouring northeast African countries, or to distinguish the broader geopolitical definition of the Horn of Africa from narrower peninsular definitions. Ancient Greeks and Romans referred to the Somali peninsula as Regio Aromatica or Regio Cinnamonifora due to the aromatic plants, or Regio Incognita owing to its unchartered territory. Shell middens 125,000 years old have been found in Eritrea, indicating the diet of early humans included seafood obtained by beachcombing. According to both genetic and fossil evidence, archaic Homo sapiens evolved into anatomically modern humans in the Horn of Africa between 200,000 and 100,000 years ago and have dispersed from the Horn of Africa; the recognition of Homo sapien idaltu and Omo Kibish as anatomically modern humans would justify the description of contemporary humans with the subspecies name Homo sapiens sapiens.
Because of their early dating and unique physical characteristics idaltu and kibish represent the immediate ancestors of anatomically modern humans as suggested by the Out-of-Africa theory. Today at the Bab-el-Mandeb straits, the Red Sea is about 12 miles wide, but 50,000 years ago it was much narrower and sea levels were 70 meters lower. Though the straits were never closed, there may have been islands in between which could be reached using simple rafts. According to linguists, the Horn of Africa is the original homeland of the proto-Afroasiatic language as it is considered the region the Afroasiatic language family displays the greatest diversity, a sign viewed to represent a geographic origin; the Horn of Africa is the place where the haplogroup E1b1b originated from, Christopher Ehret and Shomarka Keita have suggested that the geography of the E1b1b lineage coincides with the distribution of the Afroasiatic languages. Genetic analysis done on the Afroasiatic speaking population further found that a pre-agricultural back-to-Africa migration into the Horn of Africa occurred through Egypt 23,000 years ago and it brought a non-African ancestry dubbed Ethio-Somali in the region.
Together with northern Somalia, the Red Sea coast of Sudan and Eritrea is considered the most location of the land known to the ancient Egyptians as Punt, whose first mention dates to the 25th century BCE. Dʿmt was a kingdom located in Eritrea and northern Ethiopia, which existed during the 8th and 7th centuries BCE. With its capital at Yeha, the kingdom developed irrigation schemes, used plows, grew millet, made iron tools and weapons. After the fall of Dʿmt in the 5th century BCE, the plateau came to be dominated by smaller successor kingdoms, until the rise of one of these kingdoms during the 1st century, the Aksumite Kingdom, able to reunite the area; the Kingdom of Aksum was an ancient state located in the Eritrean highlands and Ethiopian highlands, which thrived between the 1st and 7th centuries CE. A major player in the commerce between the Roman Empire and Ancient India, Aksum's rulers facilitated trade by minting their own currency; the state established its hegemony over the declining Kingdom of Kush and entered the politics of the kingdoms on the Arabian peninsula extending its rule over the region with the conquest of the Himyarite Kingdom.
Under Ezana, the kingdom of Aksum became the first major empire to adopt Christianity, was named by Mani as one of the four great powers of his time, along with Persia and China. Northern Somalia was an important link in the Horn, connecting the region's commerce with the rest of the ancient world. Somali sailors and merchants were the main suppliers of frankincense and spices, all of which were valuable luxuries to the Ancient Egyptians, Mycenaeans and Romans; the Romans began to refer to the region as Regio Aromatica. In the classical era, several flourishing Somali city-states such as Opone and Malao competed with the Sabaeans and Axumites for the rich Indo-Greco-Roman trade; the birth of Islam opposite the Horn's Red Sea co
N’Djamena is the capital and largest city of Chad. A port on the Chari River, near the confluence with the Logone River, it directly faces the Cameroonian town of Kousséri, to which the city is connected by a bridge, it is a special statute region, divided into 10 districts or arrondissements. It is a regional market for livestock, salt and grains. Meat and cotton processing are the chief industries, the city continues to serve as the center of economic activity in Chad. N’Djamena was founded as Fort-Lamy by French commander Émile Gentil on May 29, 1900, named after Amédée-François Lamy, an army officer, killed in the Battle of Kousséri a few days earlier, it became the capital of the region and nation. During the Second World War, the French relied upon the city's airport to move supplies. On 21 January 1942, a lone German He 111 of the Sonderkommando Blaich bombed the airfield at Fort-Lamy, destroying oil supplies and ten aircraft. Fort-Lamy received its first bank branch in 1950, when the Bank of West Africa opened a branch there.
On April 6, 1973, the President François Tombalbaye changed its name to N’Djamena as part of his authenticité program of Africanization. The city was occupied by Libya during the 1980–81 Libyan intervention as part of the Chadian–Libyan conflict, the associated Transitional Government of National Unity; the city was destroyed during the Chadian Civil War, in 1979 and again in 1980. In these years all of the population fled the town, searching for refuge on the opposite bank of the Chari River in Cameroon, next to the city of Kousseri; the residents did not return until 1981–82, after the end of the clashes. Until 1984, facilities and services were subject to strict rationing, schools remained closed; the period of turmoil in the city was started by the abortive coup attempted by the northerner Prime Minister Hissène Habré against the southerner President Félix Malloum: while Malloum and the national army loyal to him were defeated, the intervention in the battle of other northern factions rival to that of Habré complicated the situation.
A temporary truce was reached in 1979 through international mediation, establishing the warlord Goukouni Oueddei as head of a government of national unity with his rival Habré as Defense Minister. The intense rivalry between Goukouni and Habré caused the eruption of new clashes in the city in 1980; the tug-of-war reached a conclusion after many months only when Goukouni asked for the intervention of the Libyans, whose tanks overwhelmed Habré's defenses in the capital. Following differences between Goukouni and Muammar Gaddafi and international disapproval of Libyan intervention, the Libyan troops left the capital and Chad in 1981; this opened the door to Habré, who marched on N’Djamena, occupying the city with little resistance in 1982 and installing himself as the new president. He was dislodged in a similar fashion in 1990 by a former general of his, Idriss Déby, as of 2016 the head of state of Chad; the city had only 9,976 inhabitants in 1937, but a decade in 1947, the population had doubled to 18,435.
In 1968, after independence, the population reached 126,483. In 1993, it surpassed half a million with 529,555. A good deal of this growth has been due to refugees fleeing into N’Djamena for security, although many people fled N’Djamena depending on the political situation. On April 13, 2006, a rebel United Front for Democratic Change attack on the city was defeated in the Battle of N’Djamena; the city was once again attacked on February 2008, by UFDD and RFC rebels. In N’Djamena, only about twenty- six percent of the area is urbanized. Most residents of Chad live in the capital city, N’Djamena, or the Logone Occidental Region just south of the capital. Just about half of the population is under the age of fifteen. Of these people, it is a uniform divide of females. While the division between genders is the divide among ethnic groups and religion are different. A variety of religions are with a clear Islamic predominance; the main ethnic groups are: Daza, Chadian Arabs, Ngambaye, Kanembu, Kanuri, Kuka and Barma.
N'Djamena's primary economic source is agricultural work. About 80% of the population within N'Djamena works within farming-based industries, including cultivation of crops and growing livestock; the economy in N'Djamena is therefore totally reliant on good weather, making the economy struggle in years with low rainfall. N'Djamena receives financial aid from the World Bank, as well as the African Development Bank. There is a high demand for skilled laborers within N'Djamena to work for oil and gas sectors, as well as laborers for foreign non-governmental organizations, medical services, English teaching. Residents of N'Djamena are liable to pay tax up to a maximum amount of 60% of all net income. N'Djamena is located at 12 ° 6 ′ 47 ″ N 15 ° 2 ′ 57 ″ E, on the confluence of the Logone rivers. While an administrative center, the city includes the Nassara Strip commercial centre and residential areas, such as Mbololo, Paris Congo and Moursal; the main commercial avenue of the city is the Avenue Charles de Gaulle.
N'Djamena has a semi-arid climate with a lengthy dry season. Despite the fact that the city receives on average 510 mm of rain annuall
Chad the Republic of Chad, is a landlocked country in north-central Africa. It is bordered by Libya to the north, Sudan to the east, the Central African Republic to the south and Nigeria to the southwest, Niger to the west, it is the second-largest in Central Africa in terms of area. Chad has several regions: a desert zone in the north, an arid Sahelian belt in the centre and a more fertile Sudanian Savanna zone in the south. Lake Chad, after which the country is named, is the largest wetland in Chad and the second-largest in Africa; the capital N'Djamena is the largest city. Chad's official languages are French. Chad is home to over 200 different linguistic groups; the most popular religion of Chad is Islam, followed by Christianity. Beginning in the 7th millennium BC, human populations moved into the Chadian basin in great numbers. By the end of the 1st millennium AD, a series of states and empires had risen and fallen in Chad's Sahelian strip, each focused on controlling the trans-Saharan trade routes that passed through the region.
France incorporated it as part of French Equatorial Africa. In 1960, Chad obtained independence under the leadership of François Tombalbaye. Resentment towards his policies in the Muslim north culminated in the eruption of a long-lasting civil war in 1965. In 1979 the rebels put an end to the south's hegemony. However, the rebel commanders fought amongst themselves, he was overthrown in 1990 by his general Idriss Déby. Since 2003 the Darfur crisis in Sudan has spilt over the border and destabilised the nation, with hundreds of thousands of Sudanese refugees living in and around camps in eastern Chad. An uneven inclusion into the global political economy as a site for colonial resource extraction, a global economic system that does not promote nor encourage the development of Chadian industrialization, the failure to support local agricultural production has meant that the majority of Chadians live in daily uncertainty and hunger. While many political parties are active, power lies in the hands of President Déby and his political party, the Patriotic Salvation Movement.
Chad remains plagued by recurrent attempted coups d'état. Since 2003, crude oil has become the country's primary source of export earnings, superseding the traditional cotton industry. In the 7th millennium BC, ecological conditions in the northern half of Chadian territory favored human settlement, the region experienced a strong population increase; some of the most important African archaeological sites are found in Chad in the Borkou-Ennedi-Tibesti Region. For more than 2,000 years, the Chadian Basin has been inhabited by agricultural and sedentary people; the region became a crossroads of civilizations. The earliest of these were the legendary Sao, descendants of the Hyksos who conquered Ancient Egypt known for skills in designing weapons and artifacts, they are known for their oral histories. After a century of rule, the Sao fell to the Kanem Empire, the first and longest-lasting of the empires that developed in Chad's Sahelian strip by the end of the 1st millennium AD. Two other states in the region, Sultanate of Bagirmi and Wadai Empire emerged in the 16th and 17th centuries.
The power of Kanem and its successors was based on control of the trans-Saharan trade routes that passed through the region. These states, at least tacitly Muslim, never extended their control to the southern grasslands except to raid for slaves. In Kanem, about a third of the population were slaves. French colonial expansion led to the creation of the Territoire Militaire des Pays et Protectorats du Tchad in 1900. By 1920, France had secured full control of the colony and incorporated it as part of French Equatorial Africa. French rule in Chad was characterised by an absence of policies to unify the territory and sluggish modernisation compared to other French colonies; the French viewed the colony as an unimportant source of untrained labour and raw cotton. The colonial administration in Chad was critically understaffed and had to rely on the dregs of the French civil service. Only the Sara of the south was governed effectively; the educational system was affected by this neglect. After World War II, France granted Chad the status of overseas territory and its inhabitants the right to elect representatives to the National Assembly and a Chadian assembly.
The largest political party was the Chadian Progressive Party, based in the southern half of the colony. Chad was granted independence on 11 August 1960 with the PPT's leader, Sara François Tombalbaye, as its first president. Two years Tombalbaye banned opposition parties and established a one-party system. Tombalbaye's autocratic rule and insensitive mismanagement exacerbated inter-ethnic tensions. In 1965, Muslims in the north, led by the National Liberation Front of Chad, began a civil war. Tombalbaye was overthrown and killed in 1975. In 1979 the rebel factions led by Hissène Habré took the capital, all central authority in the country collapsed. Armed factions, many from the north's rebellion, contended for power; the disintegration of Chad caused the collapse of France's position in the country. Libya moved to fill the power vacuum and became involved in Chad
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
Wyoming is a state in the mountain region of the western United States. The state is the 10th largest by area, the least populous, the second most sparsely populated state in the country. Wyoming is bordered on the north by Montana, on the east by South Dakota and Nebraska, on the south by Colorado, on the southwest by Utah, on the west by Idaho and Montana; the state population was estimated at 577,737 in 2018, less than 31 of the most populous U. S. cities including Denver in neighboring Colorado. Cheyenne is the state capital and the most populous city, with an estimated population of 63,624 in 2017; the western two-thirds of the state is covered by the mountain ranges and rangelands of the Rocky Mountains, while the eastern third of the state is high elevation prairie called the High Plains. Half of the land in Wyoming is owned by the U. S. government, leading Wyoming to rank sixth by area and fifth by proportion of a state's land owned by the federal government. Federal lands include two national parks—Grand Teton and Yellowstone—two national recreation areas, two national monuments, several national forests, historic sites, fish hatcheries, wildlife refuges.
Original inhabitants of the region include the Crow, Arapaho and Shoshone. Southwestern Wyoming was in the Spanish Empire and Mexican territory until it was ceded to the United States in 1848 at the end of the Mexican–American War; the region acquired the name Wyoming when a bill was introduced to the U. S. Congress in 1865 to provide a "temporary government for the territory of Wyoming"; the name was used earlier for the Wyoming Valley in Pennsylvania, is derived from the Munsee word xwé:wamənk, meaning "at the big river flat". The main drivers of Wyoming's economy are mineral extraction—mostly coal, natural gas, trona—and tourism. Agricultural commodities include livestock, sugar beets and wool; the climate is semi-arid and continental and windier than the rest of the U. S. with greater temperature extremes. Wyoming has been a politically conservative state since the 1950s, with the Republican Party candidate winning every presidential election except 1964. Wyoming's climate is semi-arid and continental, is drier and windier in comparison to most of the United States with greater temperature extremes.
Much of this is due to the topography of the state. Summers in Wyoming are warm with July high temperatures averaging between 85 and 95 °F in most of the state. With increasing elevation, this average drops with locations above 9,000 feet averaging around 70 °F. Summer nights throughout the state are characterized by a rapid cooldown with the hottest locations averaging in the 50–60 °F range at night. In most of the state, most of the precipitation tends to fall in early summer. Winters are cold, but are variable with periods of sometimes extreme cold interspersed between mild periods, with Chinook winds providing unusually warm temperatures in some locations. Wyoming is a dry state with much of the land receiving less than 10 inches of rainfall per year. Precipitation depends on elevation with lower areas in the Big Horn Basin averaging 5–8 inches; the lower areas in the North and on the eastern plains average around 10–12 inches, making the climate there semi-arid. Some mountain areas do receive a good amount of precipitation, 20 inches or more, much of it as snow, sometimes 200 inches or more annually.
The state's highest recorded temperature is 114 °F at Basin on July 12, 1900 and the lowest recorded temperature is −66 °F at Riverside on February 9, 1933. The number of thunderstorm days vary across the state with the southeastern plains of the state having the most days of thunderstorm activity. Thunderstorm activity in the state is highest during early summer; the southeastern corner of the state is the most vulnerable part of the state to tornado activity. Moving away from that point and westwards, the incidence of tornadoes drops with the west part of the state showing little vulnerability. Tornadoes, where they occur, tend to be small and brief, unlike some of those that occur farther east; as specified in the designating legislation for the Territory of Wyoming, Wyoming's borders are lines of latitude 41°N and 45°N, longitude 104°3'W and 111°3'W, making the shape of the state a latitude-longitude quadrangle. Wyoming is one of only three states to have borders along only straight latitudinal and longitudinal lines, rather than being defined by natural landmarks.
Due to surveying inaccuracies during the 19th century, Wyoming's legal border deviates from the true latitude and longitude lines by up to half of a mile in some spots in the mountainous region along the 45th parallel. Wyoming is bordered on the north by Montana, on the east by South Dakota and Nebraska, on the south by Colorado, on the southwest by Utah, on the west by Idaho, it is the tenth largest state in the United States in total area, containing 97,814 square miles and is made up of 23 counties. From the north border to the south border it is 276 miles; the Great Plains meet the Rocky Mountains in Wyoming. The state is a great plateau broken by many mountain ranges. Surface elevations range from the summit of Gannett Peak in the Wind River Mountain Range, at 13,804 feet, to the Belle Fourche River val
Nevada is a state in the Western United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast and Utah to the east. Nevada is the 7th most extensive, the 32nd most populous, but the 9th least densely populated of the U. S. states. Nearly three-quarters of Nevada's people live in Clark County, which contains the Las Vegas–Paradise metropolitan area where three of the state's four largest incorporated cities are located. Nevada's capital, however, is Carson City. Nevada is known as the "Silver State" because of the importance of silver to its history and economy, it is known as the "Battle Born State", because it achieved statehood during the Civil War. Nevada is desert and semi-arid, much of it within the Great Basin. Areas south of the Great Basin are within the Mojave Desert, while Lake Tahoe and the Sierra Nevada lie on the western edge. About 86% of the state's land is managed by various jurisdictions of the U. S. federal government, both civilian and military.
Before European contact, Native Americans of the Paiute and Washoe tribes inhabited the land, now Nevada. The first Europeans to explore the region were Spanish, they called the region Nevada because of the snow. The area formed part of the Viceroyalty of New Spain, became part of Mexico when it gained independence in 1821; the United States annexed the area in 1848 after its victory in the Mexican–American War, it was incorporated as part of Utah Territory in 1850. The discovery of silver at the Comstock Lode in 1859 led to a population boom that became an impetus to the creation of Nevada Territory out of western Utah Territory in 1861. Nevada became the 36th state on October 31, 1864, as the second of two states added to the Union during the Civil War. Nevada has a reputation for its libertarian laws. In 1940, with a population of just over 110,000 people, Nevada was by far the least-populated state, with less than half the population of the next least-populated state. However, legalized gambling and lenient marriage and divorce laws transformed Nevada into a major tourist destination in the 20th century.
Nevada is the only U. S. state where prostitution is legal, though it is illegal in Clark County, Washoe County and Carson City. The tourism industry remains Nevada's largest employer, with mining continuing as a substantial sector of the economy: Nevada is the fourth-largest producer of gold in the world; the name "Nevada" comes from meaning "snow-covered", after the Sierra Nevada. Most Nevadans pronounce the second syllable of their state name using the TRAP vowel. Many from outside the Western United States pronounce it with the PALM vowel. Although the latter pronunciation is closer to the Spanish pronunciation, it is not the pronunciation preferred by most Nevadans. State Assemblyman Harry Mortenson proposed a bill to recognize the alternate pronunciation of Nevada, though the bill was not supported by most legislators and never received a vote; the Nevadan pronunciation is the de facto official one, since it is the one used by the state legislature. At one time, the state's official tourism organization, TravelNevada, stylized the name of the state as "Nevăda", with a breve mark over the a indicating the locally preferred pronunciation, available as a license plate design.
Nevada is entirely within the Basin and Range Province, is broken up by many north-south mountain ranges. Most of these ranges have endorheic valleys between them, which belies the image portrayed by the term Great Basin. Much of the northern part of the state is within the Great Basin, a mild desert that experiences hot temperatures in the summer and cold temperatures in the winter. Moisture from the Arizona Monsoon will cause summer thunderstorms; the state's highest recorded temperature was 125 °F in Laughlin on June 29, 1994. The coldest recorded temperature was −52 °F set in San Jacinto in 1972, in the northeastern portion of the state; the Humboldt River crosses the state from east to west across the northern part of the state, draining into the Humboldt Sink near Lovelock. Several rivers drain from the Sierra Nevada eastward, including the Walker and Carson rivers. All of these rivers are endorheic basins, ending in Walker Lake, Pyramid Lake, the Carson Sink, respectively. However, not all of Nevada is within the Great Basin.
Tributaries of the Snake River drain the far north, while the Colorado River, which forms much of the boundary with Arizona, drains much of southern Nevada. The mountain ranges, some of which have peaks above 13,000 feet, harbor lush forests high above desert plains, creating sky islands for endemic species; the valleys are no lower in elevation than 3,000 feet, while some in central Nevada are above 6,000 feet. The southern third of the state, where the Las Vegas area is situated, is within the Mojave Desert; the area is closer to the Arizona Monsoon in the summer. The terrain is lower below 4,000 feet, creating conditions for hot summer days and cool to chilly winter nights. Nevada and California have by far the longest diagonal line as a state boundary at just over 400 miles; this line begins in Lake Tahoe nearly