the attack on pearl harbor came after years of difficulty between japan and the us. they had differences over japans behavior toward china. this breakdown began in 1931 when the japanese army invaded part of china. (23h 55min, dec 31, 1930 y – 10h 55min, jan 2, 1931 y)
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23h 55min, dec 31, 1930 y
10h 55min, jan 2, 1931 y
~ 2 days