Please put the picture so I can answer the question
<span> For 70 days, the US 7th Air Force dropped 5,800 tons of bombs on the little island
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Known for its sulfur, the little island was a major battle ground in the pacific front. The battle was decided upon to detach the capability of Zero fighters and their ability to report back to Tokyo from the little island. at that time the Americans were based in Saipan, which they had won in a previous battle.
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One reason: Plowing large areas of land
A few more reasons: poor farming practices, farmers would loosen up the soil, and the land was deforested, making it loose the roots that held the soil in place.
They proposed to attack germany from the western front as well.