The United States used the strategy of island hopping to A. Move closer to the Japanese mainland.
Step-by-step explanation:
Island hopping was a military strategy followed by the United States of America to gain military bases and secure many small islands in the Pacific. A single journey of directly crossing the ocean to reach the destination was opposed. Island Hopping is also known as leapfrogging. The military forces are strategically set on some important islands.
The United States used the strategy of island hopping to move closer to the Japanese mainland.