Given your stipulations a black majority seems unlikely unless Caribbean colonies are integrated.
The five civilised tribes remaining+south Asian migration+ earlier emancipation= larger mixed race population overall
Without strict miscegenation laws this group could become like the "coloured" population of South Africa and mean the black population goes from majority to plurality instead.
The five civilised tribes remaining+south Asian migration+ earlier emancipation= larger mixed race population overall
Without strict miscegenation laws this group could become like the "coloured" population of South Africa and mean the black population goes from majority to plurality instead.