Which of the following wars was fought by the United States in the 1900s?

The choice regarding World War I is accurate because this conflict involved the United States and is a significant historical event of the 20th century. The war began in 1914, and the U.S. entered the conflict in 1917, ultimately contributing to the defeat of the Central Powers. World War I is often marked by its trench warfare and major battles, as well as its lasting impact on global politics.

The other conflicts listed took place before the 1900s. The American Civil War occurred between 1861 and 1865, while the Revolutionary War spanned from 1775 to 1783. World War II, although also a major conflict involving the U.S., began later, in 1939 and continued through 1945.