Dynastic cycle is an important political theory in Chinese history. According to this theory, every dynasty goes through a culture cycle. A new ruler unites China, founds a new dynasty, and gains the Mandate of Heaven.
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Before the USS Maine exploded, the United States was trying to expand as a world power. Thus, many Americans blamed Spain for the explosion of the USS Maine because it gave them a reason to declare war on Spain and take control of Spanish territory in the Pacific and Caribbean.
The <u>Cold</u> <u>War</u> was the state of political hostility between countries without an outright declaration of war. The hot war ended, and the cold war started. The United States and the Soviet Union fought together against Germany. Since the end of the war, they became hostile to one another. Each worried about the strength of the other one.
