Provide two events that led to the ending of World War II used 2 to 3 sentences to explain each event ended World War II

1) The dropping of atomic bombs on the Japanese cities of Hiroshima and Nagasaki by the United States in August 1945 proved to be a decisive event in ending World War II. The bombings caused immense casualties and destruction, prompting Japan to surrender unconditionally, leading to the end of the war.

2) The Soviet Union's declaration of war on Japan in August 1945 also played a significant role in ending World War II. The Red Army swiftly advanced into Japanese-held territories, inflicting heavy losses on the Japanese forces. This, combined with the atomic bombings, led to Japan's surrender and the conclusion of the war.