Hi Brainiac
Because they believed that feed slaves would be willing to take lower wages in order to get work in North.
Sorry for the late answer, but I hope its help:)
<span>To destroy the American fleet at Pearl Harbor, Hawaii.
Hope this helps!</span>
Answer: Combatants: Soviet Union; United States
Explanation:Historians have identified several causes that led to the outbreak of the Cold War, including: tensions between the two nations at the end of World War II, the ideological conflict between both the United States and the Soviet Union, the emergence of nuclear weapons, and the fear of communism in the United States.