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bobbyet101
The answer would be choice #1: The Civil War

This would be the answer because it was one of the root causes of the civil war was slavery as well as other economic problems. 
MarkV
Hi there! The answer is A. The Civil War.

The Civil War (lasting from 1861 to 1865) was mainly caused by the economic, cultural and political consequences of slavery. In those years there the northern and southern states of the US differed a lot in their opinion about slavery, which eventually caused a war.