Simple -
- Black Africans - claim all of Africa
- Indians - claim all of the sub-continent.
The funny thing is that neither the word Africa nor the word India are native to their respective lands. Both were coined by outsiders. The word Africa was coined by Arabs and the term India was either coined by Arabs or Persians.
What I mean to say that both words, Africa and India, are English translations of terms coined by outsiders for these respective regions.