Europe felt the impact of America's slump through lack of capital, less products were being bought from Europe by Americans, American investors weren't as active, etc.
That wasn't true for the economies at the end of the World War II was that the GNP and corporate profits doubled.
Answer:
Historically, the Civil war was caused by the incompatibility between northern and southern wealth. The industrial revolution in the North caused machines to be built which relied on wage laborers and not slaves
Explanation: