I hope you are not trying to say that marriage is the only indicator of racial tolerance? There are a lot more White-African couples in the world, does that mean Whites and Africans historically enjoyed a better relationship? Were Africans ever raped, enslaved, persecuted or racially abused by Indians? African hatred for Indians is similar to European hatred for Jews. The reason being their economic success. Indians in turn have genuine reason to fear the Black community. Here in US many Indian students have been killed and many gas stations/convenience stores have been robbed in Black majority neighborhoods. Similar incidents have happened in Africa and UK.
As for Indian-African couples....
I have actually known some Indian African couples from Nairobi and Jamaica.
Fiji and Jamaica are not in Africa.
I was in South Africa last year, in South Africa the Blacks don’t like the Whites either and vice versa. The experience of South Africa does not apply to the most of the rest of Africa. South Africa has a unique history.
The Apartheid regime in South Africa played a game of “divide and rule” with the Blacks, Indians and “Coloureds”. As recently as 1983, P.W.Botha proposed a constitution in which there were to be three houses of parliament; one for the Indians, one for the Coloureds and one for the Whites. No provisions were made for the Blacks.
Unfortunately, the terrible terrible history of that beautiful country makes racial reconciliation difficult. You will not see the same visceral hatred of Whites and Indians in most African nations.(Zimbabwe is an important exception).
Idi Amin was quite simply, mad. He did not just persecute Indians but scores of his own country men.If you recall, he murdered a prominent Anglican bishop.
You also claim that other parts of African do not have significant Indian populations. Idi Amin expelled 80,000 Ugandan Asians, but I can tell you that there are a lot more than 80,000 Indians in Nigeria.
Have you talked to Africans living in India? As you rightly pointed out Africans in general treat Indians much better than Indians treat Africans.
Secondly, Black Americans are not Africans.
The sad fact is that an African would prefer to live in Shenzhen, Shanghai, Qingdao or Beijing than to live in Delhi, Calcutta or Bangalore and it is not because the Chinese have better infrastructure or the Indians have more freedom of press.