The Dust Bowl, also known as the Dirty Thirties, was a period of severe dust storms that greatly damaged the ecology and agriculture of the US and Canadian prairies during the 1930s; severe drought and a failure to apply dryland farming methods to prevent wind erosion (the Aeolian processes) caused the phenomenon.
Answer:
He led important campaigns and expanded his empire from Greece to Persia, Babylon, Egypt and beyond, taking advantage of local political contexts as he conquered new territory
Explanation:
The cotton gin was a machine for separating cotton from its seeds.
