Broah. You don't have to believe me. Just read up on the Louisiana Purchase. 1803 is when the USA acquired Louisiana, as well as Mississippi, western Alabama, West Tennessee (which is where my folks are from) and bunch of flyover country. That is what opened up the deep South (save Georgia and South Carolina) to slavery and a new crop of choice which was cotton. That is why slaves in the early 1800s were sold from the mid South (Virginia, North Carolina, Tennessee and Kentucky) into the deep South (Alabama, Arkansas, Mississippi, Louisiana).
Take a DNA test. If you are an African American you are going to find out that your family has been in the USA 400+ years, but they have only been in Louisiana for about 200 of those years. Where were they before in the othe 200 years? In the mid South.
history.state.gov 3.0 shell
history.state.gov