The korean war resulted in
north korea as a democratic nation and south korea as a communist nation
north korea as communist nation and south korea as a democratic nation
the korean peninsula being unified under communism
the korean peninsula being unified as a democracy

  North Korea as a communist nation and South Korea as a democratic nation.

Explanation:

  The Korean War was fought between the two sides of the Korean Penninsula within the context of the Cold War.

  North Korea counted with the support of China and the Soviet Union, while South Korea was supported by the United Nations, especially the United States.

  The war began when the North invaded the South and ended with an armistice creating a demilitarized zone between the two Koreas. Although this, no peace treaty was ever signed between the two of them, so technically they still at war.

  I hope this answer helps you.

confederacy: supported slavery, believed states should be able to nullify federal laws, supported low tariffs

union: everything else