Question

what was the u.s. response to north koreas invasion of south korea?
○ u.s. troops aided south korea with support from the un.
○ u.s. troops prepared for attack pending un negotiations.
○ the united states did nothing specific.
○ the united states dropped an atomic bomb on the yalu region of north korea.

Explanation:

When North Korea invaded South Korea in 1950, the United Nations Security Council authorized military intervention. The U.S. led a UN coalition of forces to aid South Korea, deploying troops to push back the North Korean invasion. The other options are incorrect: the U.S. did not wait for UN negotiations to act, took direct military action, and never used atomic bombs in the Korean War.

Answer:

U.S. troops aided South Korea with support from the UN.