
The Black Belt is a region of the U.S. state of Alabama. The term originally referred to the region's rich, black topsoil, much of it in the soil order Vertisols. The term took on an additional meaning in the 19th century, when the region was developed for cotton plantation agriculture, in which the workers were enslaved African Americans. After the American Civil War, many freedmen stayed in the area as sharecroppers and tenant farmers, continuing to comprise a majority of the population in many of these counties.

Black Belt in the American South refers to the social history, especially concerning slavery and black workers, of the geological region known as the Black Belt. The geology emphasizes the highly fertile black soil. Historically, the black belt economy was based on cotton plantations – along with some tobacco plantation areas along the Virginia-North Carolina border. The valuable land was largely controlled by rich whites, and worked by very poor, primarily black slaves who in many counties constituted a majority of the population. Generally the term is applied to a larger region than that defined by its geology.

Brunswick County is a United States county located on the southern border of the Commonwealth of Virginia. This rural county is known as one of the claimants to be the namesake of Brunswick stew. Brunswick County was created in 1720 from parts of Prince George, Surry and Isle of Wight counties. The county was named for the former Duchy of Brunswick-Lunenburg, which was a British possession in the 18th century. As of the 2010 census, the county population was 17,434, which represents a decrease of more than five percent from the 18,419 reported in the 2000 census. The Brunswick county seat is Lawrenceville.

Dallas County is a county located in the central part of the U.S. state of Alabama. As of the 2020 census, its population was 38,462. The county seat is Selma. Its name is in honor of United States Secretary of the Treasury Alexander J. Dallas, who served from 1814 to 1816.

Greene County is a county located in the west central portion of the U.S. state of Alabama. As of the 2020 census, the population was 7,730; it was the least populous county in Alabama. Its county seat is Eutaw. It was named in honor of Revolutionary War General Nathanael Greene of Rhode Island. In the 2010 census, the county's population was 81.5% African-American.

Hancock County is a county located in the U.S. state of Georgia. As of the 2010 census, the population was 9,429. The county seat is Sparta. The county was created on December 17, 1793 and named for John Hancock, a Founding Father of the American Revolution.

Holmes County is a county in the U.S. state of Mississippi; its western border is formed by the Yazoo River and the eastern border by the Big Black River. The western part of the county is within the Yazoo-Mississippi Delta. As of the 2010 census, the population was 19,198. Its county seat is Lexington. The county is named in honor of David Holmes, territorial governor and the first governor of the state of Mississippi and later United States Senator for Mississippi. A favorite son, Edmond Favor Noel, was an attorney and state politician, elected as governor of Mississippi, serving from 1908 to 1912.

Lowndes County is in the central part of the U.S. state of Alabama. As of the 2020 census, the county's population was 10,311. Its county seat is Hayneville. The county is named in honor of William Lowndes, a member of the United States Congress from South Carolina.

Macon County is a county located in the east central part of the U.S. state of Alabama. As of the 2020 census, the population was 19,532. Its county seat is Tuskegee. Its name is in honor of Nathaniel Macon, a member of the United States Senate from North Carolina.

Marengo County is a county located in the west central portion of the U.S. state of Alabama. As of the 2020 census, the population was 19,323. The largest city is Demopolis and the county seat is Linden. It is named in honor of Battle of Marengo near Turin, Italy, where French leader Napoleon Bonaparte defeated the Austrians on June 14, 1800.
Randolph County is a county located in the southwestern portion of the US state of Georgia and is considered part of the Black Belt, historically an area of plantations. As of the 2010 census, the population was 7,719, less than half its peak population in 1910, when there were numerous agricultural workers. The county seat is Cuthbert.

Sumter County is a county located in the west central portion of Alabama. At the 2020 census, the population was 12,345. Its county seat is Livingston. Its name is in honor of General Thomas Sumter of South Carolina.