Answer:
Iwo Jima
Explanation:
Iwo Jima is an island that is located 750 miles off the coast of Japan and it had three airfields that could serve as a staging facility for a potential invasion of mainland Japan.
Because of that American forces invaded the island on February 19th of 1945, this invasion caused the Battle of Iwo Jima that lasted 5 weeks, it was one of the bloodiest battles in WWII.
