What marked the end of the war in the Pacific?

The dropping of atomic bombs on Hiroshima and Nagasaki is widely recognized as the event that marked the end of the war in the Pacific during World War II. These bombings occurred in August 1945 and led to unprecedented destruction and loss of life, ultimately coercing Japan into surrendering. Following these events, Japan announced its surrender on August 15, 1945, which was formally signed on September 2, 1945. This surrender effectively concluded the Pacific War and, subsequently, the entirety of World War II.

The context of the other options reflects significant historical events but does not pertain directly to the end of the Pacific conflict. The surrender of Germany was part of the European theater and did not impact the war in the Pacific. The Treaty of Versailles was signed after World War I and did not relate to World War II or its conclusion. Although the complete occupation of Japan by Allied forces occurred after the war ended, it was the atomic bombings that precipitated the surrender, making the dropping of the bombs the pivotal event.