Was US involvement in Korea justified?

I

in June 1950 communist North Korea invaded South Korea. The United States came to the aid of South Korea at the head of a United Nations force composed of more than a dozen countries. Communist China joined North Korea in the war in November 1950, unleashing a massive Chinese ground attack against American forces.

Explanation:

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explanation:

i belive the continental association was created to boycott all contact with british goods.

i also belive it was in december 1, 1774