Who were the "Rough Riders," and what role did they play in American Imperialism?

The "Rough Riders" were a volunteer cavalry regiment that played a significant role during the Spanish-American War, which marked an important moment of American imperialism. Led by Theodore Roosevelt, the Rough Riders became famous for their charge up San Juan Hill in Cuba, which was a decisive battle in the war. This regiment was composed of a diverse group of individuals, including cowboys, miners, and college athletes, reflecting the populist spirit of the era.

The successful charge and subsequent victory at San Juan Hill bolstered the reputation of Roosevelt and showcased the United States' military capabilities. This event contributed to the broader narrative of American expansionism and imperialism at the turn of the 20th century, as it marked the U.S. emergence as a global power. The Spanish-American War itself resulted in the U.S. gaining territories such as Puerto Rico, Guam, and the Philippines, further solidifying the nation's imperial ambitions.

The other options do not accurately describe the Rough Riders or their significance. Andrew Jackson was not involved with the Rough Riders, nor were they a regular army division during World War II. Additionally, this group was not related to domestic law enforcement, as they were primarily a military unit engaged in overseas conflict during a period of imperial expansion