After North Korean forces invaded South Korea in 1950, why did the United States launch a defense of South Korea?

A. To geographically contain communism

B. To promote financial interests in the region

C. To demonstrate military superiority over China

D. To diplomatically assist fledgling democracies
(im between a and d)

A.To geographically contain communism

Explanation:

At that time United States and the Ally afraid that if Communism spread to Korea , eventually The rest of Asian region will fall under communism. This is why they sent military help to south Korea and stop the spread of the ideology right there.

Technically, this could also be considered as the act of assist fledgling democracies (Option D). But option D is a little bit inaccurate because diplomacy is an effort to maintain relationship without violent actions. So war cannot be considered as a diplomatic action.

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.

rain should be the answer.