Which of the following were problems African nations faced since gaining independence?

The second and four

Explanation:

This is what I got on my test lat month I hope its right.

answer:

it caused mass african migration, african populations to grow, african empires to topple, and racism against slaves to emerge.

the correct answer is d

a conference committee is a group of congress representatives appointed by the senate and the house to reach an agreement over a bill that had different versions in each chamber. this is due to the fact that, to pass a law. both the house and the senate must agree on the exact same content and wording of the bill to present it to the president.