What was the reason for the fall of Mali?

Decline. The Mali Empire was in decline by the 15th century CE. The ill-defined rules for royal succession often led to civil wars as brothers and uncles fought each other for the throne. Then, as trade routes opened up elsewhere, several rival kingdoms developed to the west, notably the Songhai.

Explanation:

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.

the answer is d. selective incorporation. (apex)