Omaha /ˈoʊməhɑː/ is the largest city in the state of Nebraska, United States, and is the county seat of Douglas County. It is located in the Midwestern United States on the Missouri River, about 20 miles (30 km) north of the mouth of the Platte River. Omaha is the anchor of the Omaha-Council Bluffs metropolitan area, which includes Council Bluffs, Iowa, across the Missouri River from Omaha.

According to the 2010 Census, Omaha's population was 408,958, making it the nation's 42nd-largest city. Including its suburbs, Omaha formed the 60th-largest metropolitan area in the United States in 2010, with an estimated population of 877,110 residing in eight counties. There are more than 1.2 million residents within a 50-mile (80-km) radius of the city's center, forming the Greater Omaha area.

Omaha's pioneer period began in 1854 when the city was founded by speculators from neighboring Council Bluffs, Iowa. The city was founded along the Missouri River, and a crossing called Lone Tree Ferry earned the city its nickname, the "Gateway to the West." It introduced this new West to the world when in 1898 it played host to the World's Fair, dubbed the Trans-Mississippi Exposition. During the 19th century, Omaha's central location in the United States spurred the city to become an important national transportation hub. Throughout the rest of the 19th century, the transportation and jobbing sectors were important in the city, along with its railroads and breweries. In the 20th century, the Omaha Stockyards, once the world's largest, and its meatpacking plants, gained international prominence.

Nebraska (ⁱ/nəˈbræskə/) is a state on the Great Plains of the Midwestern United States. Its state capital is Lincoln and its largest city is Omaha, on the Missouri River.

The state is crossed by many historic trails, but it was the California Gold Rush that first brought large numbers here, and it became a state in 1867. Certain landmarks still compete for the notional distinction 'Where the West Begins'.

There are wide variations between winter and summer temperatures, and violent thunderstorms and tornadoes are common. The state is characterized by treeless prairie, ideal for cattle-grazing, and it is a major producer of beef, as well as pork, maize and soybeans. Nebraska is overwhelmingly rural, as the 8th least-densely populated state of the United States.

Ethnically, the largest group are German-Americans, and the state has the biggest Czech-American population per head. During the Great Migration, many African Americans came to Omaha, and they continue to campaign for improved conditions. More recently, Native American activism has increased, with a drive for self-determination in a climate of co-operation with state officials on regional issues. It is traditionally a Republican-voting state.

The term black people is used in some socially-based systems of racial classification for humans of a dark-skinned phenotype, relative to other racial groups represented in a particular social context. Different societies apply different criteria regarding who is classified as "black", and often social variables such as class and socio-economic status also play a role, so that relatively dark-skinned people can be classified as white if they fulfill other social criteria of "whiteness" and relatively light-skinned people can be classified as black if they fulfill the social criteria for "blackness" in a particular setting.

As a biological phenotype being "black" is often associated with the very dark skin colors of some people who are classified as "black". But, particularly in the United States, the racial or ethnic classification also refers to people with all possible kinds of skin pigmentation from the darkest through to the very lightest skin colors, including albinos, if they are believed by others to have African ancestry, or to exhibit cultural traits associated with being "African-American". As a result, in the United States the term "black people" is not an indicator of skin color but of socially based racial classification.