What impact did the Adams-Onís Treaty have on the future state of Oklahoma? (Site 2)

either d or b, i'm not to sure. but my gut tells me it's prob going to be b

during the great migration, african americans began to build a new place for themselves in public life, actively confronting racial prejudice as well as economic, political and social challenges to create a black urban culture that would exert enormous influence in the decades to come