What were the motives of China to participate in the Korean War on the Northern side

Ideological Alignment: The first and foremost reason was the ideological alignment. China, being a communist nation after the Chinese Civil War, naturally aligned with North Korea, which was also a communist nation. They saw the Korean War as a war against the imperialist forces, particularly the United States and its allies.

Security Concerns: China was concerned about its security. If the United States and its allies won the war, they would have a military presence right on the border of China, which was seen as a direct threat to China's sovereignty and security.

Geopolitical Interests: China wanted to increase its influence in the region. By supporting North Korea, China could ensure a friendly government in the region, which would be beneficial for its geopolitical interests.

Domestic Politics: The Chinese leadership, particularly Mao Zedong, saw the war as an opportunity to consolidate his power at home. By portraying the war as a fight against imperialism, he could rally the people behind him and strengthen his position.

Economic Reasons: Although not a primary motive, economic reasons also played a part. China was a poor country at the time and it saw the war as an opportunity to seize assets and resources from the Korean Peninsula.