Answer:
More than 2300 Americans were killed on that day
Explanation:
The attack on Pearl Harbor was the day that America officially joined the war. Japan launched a surprise attack on Pearl Harbor without a prior declaration of war. They tried to cripple the US fleet so that they would not interfere in their war in Asia. It seemed that the US fleet suffered heavy losses but since the US was an industrial powerhouse they recovered rather quickly.
Disgrace is the answer for this
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I think the most significant cause of World War one was the assassination of the Archduke Franz Ferdinand. The other causes of the war was Imperliasm, Militarism, Nationalism and Alliances that were formed.
