The Island hopping campaign
Okinawa
Because of their physical proximity to Japan they could be used as staging areas for an invasion, and they could be used to launch bombing raids. Obviously the Japanese wanted neither one of these things.
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 Japanese came in substantial numbers to Hawaii and the west coast of the United States. Many were employed in Hawaiian plantations. Some acquired farms on the mainland. Some became workers in factories or on railroads, although there were more Chinese employed in that capacity. Industries sought Japanese workers after the Chinese Exclusion Act in 1882, until the Japanese were blocked as well in 1907 under the Gentleman's Agreement.
480 BCE, during the Persian invasion of mainland Greece.
The Americans needed the airfields and needed the island to marshal forces for an invasion of the Japanese mainland .
Japan surrendered without an invasion of the Japanese mainland - apex
Okinawa
Because it's quite a distance away, an invasion would have really hard to organise.
The cost in lives of the US military in the invasion of the Japanese mainland.
Because of their physical proximity to Japan they could be used as staging areas for an invasion, and they could be used to launch bombing raids. Obviously the Japanese wanted neither one of these things.
It saved millions of Russian, Japanese, American, Canadian, British and Australian lives by preventing the invasion of mainland Japan.The amount of lives lost in the bombing was not even close to the amount of Japanese who would have died during the invasion of Japan.The war ended AT LAST.
The specific reason was that the US wanted to avoid a costly and dangerous land war that would have resulted with a Japanese mainland invasion.
move closer to the Japanese mainland.
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 Persian invasion of mainland Greece 480-479 BCE.
Τhe Persians' goal for their invasion in the greek mainland was the conquest of the greek territory.