What was the secondary cause of the civil war

Rights

Explanation:

The second, and most prominent from the Southern perspective is the war was over the reach of the Federal Government into the rights of the individual States.

The first, and most prominent, especially from the Northern perspective, is Slavery was the primary cause of the war. The second, and most prominent from the Southern perspective is the war was over the reach of the Federal Government into the rights of the individual States.

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