Why did the wars and revolution in china and eastern Europe?

The wars and revolutions in China and Eastern Europe were driven by a combination of factors, including political oppression, economic hardship, and the desire for national sovereignty. In China, the fall of the Qing Dynasty and the rise of communist ideology led to the Chinese Civil War, while in Eastern Europe, the collapse of communist regimes was fueled by widespread dissatisfaction with authoritarian rule and economic stagnation. These movements sought to establish more democratic governance and improve living conditions, reflecting a broader trend toward self-determination and reform during the 20th century. Ultimately, both regions experienced significant social and political upheaval as a result.