How did containment lead to the united states becoming involved in the conflict between north and South Korea (the Korean War) help me if you can please

The conflict between north and South Korea:

In June 1950 communist North Korea attacked South Korea. The United States went to the guide of South Korea at the leader of a United Nations power made out of in excess of twelve nations. Control was the significant Cold War strategy of the United States and its partners to forestall the spread of socialism abroad.

North Korea before long went into the control of the Communist Party. In May 1949, battling among North and South Korean soldiers broke out close to the fringe between the two countries. Socialist China joined North Korea in the war in November 1950, releasing a monstrous Chinese ground assault against American powers.

Essentially due to the risk of Communist development by China, alongside the dread that the SU was working with China to make bombs. Also, Korea was situated at the 38th Parallel, which makes it a significant point to hold in the region for political control.

it was the first amendment

a and b!

dfroos means which is a and b