How did us General MacArthur’s landing in Korea and successful push toward the Chinese border affect the course of the Korean War?

Observing MacArthur’s success the Soviet Union and China sent guns and warplanes to aid North Korea.
As us forces advanced and winter set in China supplied North Korean troops with food and ammunition.
Fearing an American invasion in China Mao Zedong dispatched troops to support North Korean armies.
As MacArthur’s troops neared china’s border Mao Zedong asked the un to help settle the Korean War

The landing of General MacArthur in Korea and the successful push towards the Chinese border had a significant impact on the course of the Korean War.

Firstly, observing MacArthur's success, the Soviet Union and China decided to intervene and support North Korea. They sent guns and warplanes to aid the North Korean forces, which greatly bolstered their military capabilities.

As the US forces advanced towards the border and winter set in, China further stepped up its support to North Korea. They supplied the North Korean troops with food and ammunition, sustaining their fighting capabilities during the harsh winter conditions.

Mao Zedong, the leader of China, also feared that the US forces would eventually launch an invasion on Chinese territory. To prevent this, he dispatched troops to support the North Korean armies, effectively escalating the conflict and increasing the likelihood of a larger-scale war.

As MacArthur's troops neared China's border, Mao Zedong saw the need to seek help from the United Nations (UN) to settle the Korean War. This move was an attempt to prevent further escalation and find a solution through diplomatic means.

Overall, MacArthur's landing and push towards the Chinese border prompted significant intervention from the Soviet Union and China, leading to a more protracted and complex conflict. It also highlighted the growing tensions between the US-led forces and communist powers, setting the stage for a wider involvement of international actors in the Korean War.