(A) ** Theodore Roosevelt, they were a cavalry unit that fought in the war.
(B) The Cuban president, they were a cavalry unit that fought in the war.
(C) President William Mckinley, they were a cavalry unit that fought in the war.
EXPLANATIONS BELOW
Concept note-1: -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.
Concept note-2: -Before becoming President of the United States, Theodore Roosevelt was the Assistant Secretary of the Navy. He resigned in 1898 to organize the Rough Riders, the first voluntary cavalry in the Spanish-American War. The U.S. was fighting against Spain over Spain’s colonial policies with Cuba.
Concept note-3: -Rough Rider, member of 1st Volunteer Cavalry, in the Spanish-American War, member of a regiment of U.S. cavalry volunteers recruited by Theodore Roosevelt and composed of cowboys, miners, law-enforcement officials, and college athletes, among others.