Who were the rough riders

The most famous of all the units fighting in Cuba, the "Rough Riders" was the name given to the First U.S. Volunteer Cavalry under the leadership of Theodore Roosevelt. Roosevelt resigned his position as Assistant Secretary of the Navy in May 1898 to join the volunteer cavalry

Explanation:

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b gas tractor

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c and negotiated lower prices for farm equipment and supplies

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d the grange

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c over 15,000 bankrupt businesses

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c people became more self-sufficient