They settled in river valleys because they wanted their crops and soil to be rich and eaiser to water their plants.
<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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Answer:Many scholars believe that the collapse of the Indus Valley Civilization was caused by climate change. Some experts believe the drying of the Saraswati River, which began around 1900 BCE, was the main cause for climate change, while others conclude that a great flood struck the area.
Explanation:
Abolitionists employed each of these techniques. The underground railroad was a system used to help slaves escape. Religion played a critical role in helping people realize the immorality of slavery and armed force was used in certain cases (occasionally resulting in even greater problems or backlash from slave owners).