<Ul> <Li> Most definitions include the states Georgia, Alabama, South Carolina, Mississippi, and Louisiana . </Li> <Li> Texas is also included, due to its history of slavery and as being a part of the Confederate States of America . The eastern part of the state is the westernmost extension of the Deep South . <Ul> <Li> Arkansas is sometimes included or else considered "in the Peripheral or Rim South rather than the Deep South ." </Li> </Ul> </Li> <Li> The seven states that seceded from the United States before the firing on Fort Sumter and the start of the American Civil War, and were the first to form the Confederate States of America . Ultimately the Confederacy included eleven states . In order of secession they are: South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas . The first six states to secede were those that held the largest number of slaves . </Li> <Li> A large part of the original "Cotton Belt". This was considered to extend from eastern North Carolina to South Carolina and through the Gulf States as far west as East Texas, and including those parts of western Tennessee and eastern Arkansas in the Mississippi embayment . Some of this is coterminous with the Black Belt, originally referring to upland areas of Alabama and Mississippi with fertile soil, which were developed for cotton under slave labor . The term came to be used for much of the Cotton Belt, which had a high percentage of African - American slave labor . </Li> </Ul> <Li> Most definitions include the states Georgia, Alabama, South Carolina, Mississippi, and Louisiana . </Li> <Li> Texas is also included, due to its history of slavery and as being a part of the Confederate States of America . The eastern part of the state is the westernmost extension of the Deep South . <Ul> <Li> Arkansas is sometimes included or else considered "in the Peripheral or Rim South rather than the Deep South ." </Li> </Ul> </Li> <Ul> <Li> Arkansas is sometimes included or else considered "in the Peripheral or Rim South rather than the Deep South ." </Li> </Ul>

Which region of texas is culturally an extension of the old south