Question

Why was expansion a cause of the civil war

Answer 1

because of economic, political and social aspects of westward expansion. Therefore, westward expansion caused the Civil War.

Step-by-step explanation:

Answer 2

A common explanation is that the Civil War was fought over the moral issue of slavery. ... Meanwhile, the newly formed Republican party, whose members were strongly opposed to the westward expansion of slavery into new states, was gaining prominence.

Step-by-step explanation:

There ya go..