After the bloody battle on saipan: a. the united states did not need to maintain pacific air bases. b. japanese civilians gave themselves over to the americans without hesitation. c. it became clear that an invasion of japan would be extremely costly. d. it became clear that japan was ready to surrender without conditions.

C. it became clear that an invasion of Japan would be extremely costly.

Explanation:

It was the year 1944 and the war was not going well for Japan. The defeats were accumulated in the record of the Nipponese: scenarios such as Midway, Guadalcanal and Tarawa were proof of that. The US forces began an island-on-island campaign, direct to Japan. Each atoll was a step that brought them closer to Tokyo.

On their way to the main islands of Japan were the Mariana Islands, an archipelago in the middle of the Pacific of great strategic value. Taking the Marianas, the B-29 bombers of the United States could attack Japanese lands. It was imperative to capture islands such as Saipan, Guam and Tinian to be able to bomb Japan.

Aware of the importance of the Marianas, the Japanese strengthened their garrisons and fortified the archipelago. However, among the inhabitants of Saipan, there were not only military personnel, but also a colony of Japanese civilians.

On June 15, 1944, US troops landed in Saipan supported by a powerful fleet. Both the Marines and the soldiers of the US Army found an obstinate Japanese resistance on the beaches and hills of Saipan. The Japanese, without the possibility of receiving reinforcements or air and naval support, fought fiercely, fighting to the last man. Meanwhile, the American forces were forced to expel them from cave to cave, because the Japanese, with the deeply internalized code of Bushido, preferred death to the dishonor of surrender.

b) the confederacy had to pay all union war expenses.