is regarded as one of the most important and strongest Islamic kingdoms in Africa. Its kings carried out great works to spread Islam in Abyssinia and remained in existence until the arrival of the Portuguese colonialists
A, Balie B, Dawroh C, Iffat

Iffat is regarded as one of the most important and strongest Islamic kingdoms in Africa.

Option: C

Explanation:

Through 7th century the presence of Islam in Africa can be traced. The most powerful kingdom was established by Singhal empire by 1500, it has stretched from Maghlon to Camerron in the early 16th century. Firstly Islam spread very slowly and in calm and peaceful environment.

Prince Henry the first person who discovered Africa. Christianity and Islam are the two religions which is connected with the inhabitants of Africa. Among Islam Iffat is regarded as one of the most important and strongest Islamic kingdom.

after the french-indian war.

this is a good question! i'll do some research and come back when i have the answer!