What strategy did the United States use when it entered the Korean War? dropping atomic bombs to force the North Koreans to the peace table
convincing the South Koreans that they should sign an armistice
sending forces behind North Korean lines and landing at Inchon
offering massive foreign aid if North Korea promised to stop fighting

sending forces behind North Korean lines and landing at Inchon

Explanation:

During the conflict of the Korean War, the United States stood on the side of South Korea.

The US forces made the offense into North Korea as part of the UN offensive. This happened at the end of 1950, but the offensive was later halted by Chinese intervention.

However, the war took a massive turn during the landing and battle of Inchon. The US party general, Douglas MacArthur, was leading the UN and South Korean Armies.

The battle ended in their favor with the victory for the UN. North Korea collapsed in the aftermath of the battle and offensive.

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