How did the Manhattan project hope to end the war?

The Manhattan Project aimed to develop atomic weapons that would provide the United States with a decisive military advantage in World War II. By successfully creating and deploying atomic bombs, the project sought to force a swift surrender from Japan, thereby avoiding a prolonged and costly invasion of the Japanese mainland. The bombings of Hiroshima and Nagasaki in August 1945 ultimately demonstrated this destructive power, leading to Japan's capitulation and the war's conclusion.