Answer:
island hopping
The Allied strategy to defeat Japan in the Pacific Ocean was a strategy called island hopping. After the attack by the Japanese on Pearl Harbor on December 7, 1941, the American military in the Pacific was severely depleted.
or
Nuclear weapons shocked Japan into surrendering at the end of World War II—except they didn't. Japan surrendered because the Soviet Union entered the war. Japanese leaders said the bomb forced them to surrender because it was less embarrassing to say they had been defeated by a miracle weapon.