Please help :D. Thanks.

D

Explanation:

If the amount of slaves that Western Africa had expanded, then their economy would expand because they would have more workers to build building and railroads ext.

b. sec, foreign relations

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.