An option was to send troops to the mainland but that option was not better than dropping the bombs.
He could have waited on Japan to die a horrible death because of hunger.
The invasion of Mainland Japan, which was the only other alternative, and which would have been horrifically costly in lives - both American and Japanese.
The dropping of the atomic bombs on Hiroshima and Nagasaki, and the Soviet declaration of war on Japan. All three occurred within days of each other, and were crucial in stirring Japan's leadership to capitulate to Allied demands.
According to J. Samuel Walker, the consensus among scholars is that the dropping of the atomic bomb on Japan was not necessary to secure a swift end to World War II. Many historians argue that Japan was already on the verge of surrender and that other factors, such as the Soviet Union's entry into the war against Japan, would have led to Japan's capitulation without the use of atomic weapons. Walker emphasizes the ongoing debate about the moral implications and strategic decisions surrounding the bombings. Overall, there is a growing recognition that the bomb's use was more about demonstrating power than achieving military necessity.
Japan did not make an atomic bomb. It received two in ww2, one in Hiroshima the other over Nagasaki.
After the atomic bombs Japan had no other choice.
Because Japan did not have the resources or the industrial capacity to continue fighting. True, Japan would have been halted by shrinking materials....eventually. However, the dropping of the atomic bomb, both in Hiroshima & Nagasaki brought Japan to it's knees. A third location was hinted at, but never bombed. It must be said that prior to the use of the atomic bomb. Many members of the Diet (governing body) were advocating ending the war.
They did not, it was the other way round.
The argument was the words of President who ordered the bombs. He stated that he wanted to end the war and to collapse the means for Japan to make war ever again. There were other facts as to why to drop the bomb but wanting to end the war fell in the first place.
Japan had fought very hard, they had taken over China and other small countries around them, but soon after that Australia got involved as well as America. The Australians won the battle on the Kokoda Trail and America ended Japan's rein by dropping 2 atomic bombs on Hiroshima and Nagasaki
US actions in the face of Japanese aggression was limited to economic sanctions, and the other Allies also tried to limit the acquisition of war materials by Japan.
Beyond the deaths and injuries to hundreds of thousands of people, and the complete destruction of 2 large cities, it provided the push required for the Japanese government to surrender, and end the war at once. Without that push, the war could have continued for a longer time, causing even more deaths and injuries.