Answer:
The correct answer is A. After the US dropped atomic bombs on two major cities in Japan, Japan surrendered.
Explanation:
The atomic bombings of Hiroshima and Nagasaki were nuclear attacks ordered by Harry S. Truman, president of the United States, against the Empire of Japan. The attacks were carried out on August 6 and 9, 1945, respectively, which contributed, together with the Soviet-Japanese War, to the surrender of Japan and the end of World War II. After six months of intense bombing of 67 other cities, the "Little Boy" nuclear weapon was released on Hiroshima on Monday, August 6, 1945, followed by the detonation of the "Fat Man" bomb on Thursday, August 9 over Nagasaki. Between 105,000 and 120,000 people were killed and 130,000 wounded. To date, these bombings are the only nuclear attacks in history.
Six days after the detonation on Nagasaki, on August 15, the Empire of Japan announced its unconditional surrender to the "Allies", becoming formal on September 2 with the signing of the capitulation act. With the surrender of Japan, the Pacific War ended and, therefore, the Second World War.