During world war ii, why did japan strongly and passionately defend iwo jima?

It was believe if Iwo Jima fell Japan would as well.

The reasoning to this is that if America manage to raise the American flag there it would make the Japanese feel less confident and would show that the US won the war.

what are local authorities doing to fix the problem

explanation:

ghana achieved independence peacefully, while algeria gained independence through an armed struggle.