This political, economic, and social movement is meant to create solidarity amongst people all over the world who can trace their ancestry to africa.

The political, economic, and social movement meant to create solidarity amongst people all over the world who can trace their ancestry to Africa is known as Pan-Africanism movement.
All people of African descent are encouraged to foster solidarity because they have the same background. Unity is vital for economy, according to this theory, which is why in order to make Africa better, all Africans have to unite as one.

The answer is crop yield.