Why was the united states interested in Iwo Jima

By the summer of 1944, the war in the Pacific was clearly being won by the United States and its allies, who, emboldened by the decimation of Japanese naval and air forces at the Battle of Midway two years earlier, had driven Japanese forces from most of their island strongholds. Commander in Chief of the U.S. Pacific Fleet (CINCPAC) Adm. Chester W. Nimitz had led the Allied Pacific Ocean Areas command in wresting the island of Guadalcanal from the Japanese and driving up through the Solomon Islands to Bougainville. Joint Army and Marine Corps amphibious assaults had routed the Japanese from the Gilbert and Marshall Islands chains. Gen. Douglas A. MacArthur, Supreme Allied Commander of the Southwest Pacific Area, was on the threshold of recapturing the Philippine Islands after leading forces along the northeast coast of New Guinea and to nearby islands, isolating and enfeebling key Japanese installations.

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~mina

I'm not sure honestly why they are interested in iwo

i think i will need more detail to answer if this is a specific question on a test, but technology advancements are good for many industries, such as medicine or food industries, new technology could us in medicine in ways such as new scanners to tell us more about our bodies or new cures or vaccines for diseases.