Why did roosevelt and most american consider the pearl harbor attack to be a dirty trick

Roosevelt and most Americans considered the Pearl Harbor attack to be a dirty trick, because it occurred while the Japanese ambassador was talking with the US about keeping peace in-between the two nations.

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he impacted the society ith his knowwdge and advance our research by years to come

the american colonists were happy with their vicorty, but the french were mad and the french and indians were not alies, and neither were the french and colonist. i think,