Answer:
Mostly by D. Overland trails
Explanation:
The oregon trail was the most popular, and were travelled by thousands if not more people by wagon.
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The correct answer for the question that is being presented above is this one: "The Great Plains." The region in the United States that suffered most directly from the dust bowl is the Great Plains. Dust bowl <span>was a period of severe </span>dust<span> storms that greatly damaged the ecology and agriculture of the US and Canadian.</span>
The three nations that were allies of the United States in the war with Japan were "Britain France and China," since Japan was an ally of Nazi Germany, which stood at the center of the Axis powers during World War II.
In general, a major result of more farms becoming mechanized was that "farm workers became rural entrepreneurs, although it should be noted that this was not universal.