What political and military transformations in japan led to the attack on pearl harbor in 1941? a)japanese imperialism had successfully spread the nation’s military control throughout other parts of the pacific. b)japan’s political control of korea ended after it lost a war against china, so japan retaliated against china’s allies. c)japan’s emperor meiji rose to power, putting an end to their constitutional government and leading to a military state. d)japanese political leaders closed the country off to trade and cultural exchange with other nations, leading to isolation and tension.