Answer:
The Peloponnesian War was a war fought in ancient Greece between Athens and Sparta—the two most powerful city-states in ancient Greece at the time (431 to 405 B.C.E.). This war shifted power from Athens to Sparta, making Sparta the most powerful city-state in the region.
The correct answer is D.
This is due to Abraham Lincoln not supporting the expansion of slavery as the southern state's support slavery.
Hope this helped.
I don't really think I am right but maybe d I think sorry if it's wrong