What is the significance of pearl harbor to the ending of world war ii? a) the united states immediately bombed japan, ending world war ii. eliminate b) the japanese surprise victory at pearl harbor marked the end of world war ii. c) in retaliation for the bombing at pearl harbor, the soviet union declared war on japan, effectively ending world war ii. d) the bombing at pearl harbor brought the us into the war, which signified a turning point toward an eventual allied victory.