The United States entered WWII after the Japanese bombed Pearl Harbor.
The right answer is more than likely C because because the British had an inexperienced army. Although the British did inflict significant causalities to the army it was a clear victory for the Americans.
U.A.E got it's independence on 2nd December 1971.
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The correct answer to this question is:
Anasazi
They lived during the 13th century (A.D) in the Mesa Verde region.