Answer: Here's a reason.
Explanation:
The release of two atomic bombs on Japan in August 1945 helped end World War II but ushered in the Cold War, a conflict between the United States and the Soviet Union that dragged on nearly half a century. In the United States, the use of the bombs was widely praised by a public tired of war and high casualties.
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5th to the 15th century is when the middle ages were!
The political unit from history was a monarchy
now its a democracy.
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Becuase they want to show everyone what they can do
China the last emperor to rule before the overthrow of the Quin Dynasty
