The victory at Iwo Jima was significant for a number of reasons. First, it allowed the United States to establish a strategic air base on the island, which was used to launch bombing raids against the Japanese mainland. This helped to weaken Japan's ability to defend itself and ultimately contributed to its defeat in the war.
Second, the victory at Iwo Jima was a major morale boost for the United States and its allies. It demonstrated that the United States was capable of defeating Japan in a major battle and gave hope to the Allied forces that victory was within reach.
Finally, the victory at Iwo Jima was significant because it marked a turning point in the war in the Pacific. Prior to the battle, Japan had been on the offensive, seizing control of numerous islands in the region. The defeat at Iwo Jima marked the beginning of the end for Japan, as it signaled the start of the United States' counteroffensive in the Pacific. The United States went on to win a series of major battles against Japan, culminating in its victory in the war.