It appears that the present-day form of African American English is not the inheritance of the period of slavery, but the creation of the second half of the 20th century.
“If we look at Houston, which is a very environmentally toxic place, we find that it has one of the highest levels of young men going to prison and also among the highest levels of illiteracy in the country.”
“Why should I limit myself to only one woman when I can have as many women as I want?”