It is usually accepted that Mesopotamia is the earliest knows civilization.
The Sumers were the first empire in the history, in Mesopotamia, but there was a civilization in Mesopotamia before them.
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The United States annexed Hawaii in order to "save the people from the barbaric monarchy". In the Treaty of Paris, Spain ceded the Philippines to the United States for $20 million. Although the U.S annexed the territories, they faced violent resistance.
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