What social issues encouraged slavery in the southern colonies between 1607 and 1775?

this from apush with doc at tvs? or do we just happen to have the same exact essay questions?

I'm from LPHS with Wooley and Birrel and I have the same question. Well actually my question is How did econimic geographic and social factors encourage the growth of slavery as a important part of the economy of the southern colonies between 1607 and 1775 but it's basically the same thing. And my class isn't AP, I just live in Utah where all the schools are harder.