Question

What country entered the war after the United Nation forces crossed into North Korea

Answer 1

China entered the Korean War after United Nations forces crossed into North Korea. In October 1950, as UN troops, predominantly led by the United States, advanced toward the Yalu River near the border with China, the Chinese government became concerned about the potential threat posed by these forces and decided to intervene in support of North Korea. This led to a significant escalation in the conflict.