Mississippi is a state in the southern region of the United States, with part of its southern border formed by the Gulf of Mexico. Its western border is formed by the Mississippi River.The state has a population of approximately 3 million. It is the 32nd most extensive and the 32nd most populous of the 50 United States. Located in the center of the state, Jackson is the state capital and largest city, with a population of approximately 175,000 people.The state is heavily forested outside of the Mississippi Delta area, between the Mississippi and Yazoo rivers. Before the American Civil War, most development in the state was along riverfronts, where slaves worked on cotton plantations. After the war, the bottomlands to the interior were cleared, mostly by freedmen. By the end of the 19th century, African Americans made up two-thirds of the Delta's property owners, but timber and railroad companies acquired much of the land after a financial crisis.Clearing altered the Delta's ecology, increasing the severity of flooding along the Mississippi. Much land is now held by agribusinesses. A largely rural state with agricultural areas dominated by industrial farms, Mississippi is ranked low or last among the states in such measures as health, educational attainment, and median household income. The state's catfish aquaculture farms produce the majority of farm-raised catfish consumed in the United States.