The document summarizes Texas' involvement in several early 20th century world events. During the Spanish-American War in 1898, over 10,000 Texans fought including Theodore Roosevelt's Rough Riders regiment. The war increased Texas' role in global affairs. The Mexican Revolution from 1910-1920 caused refugees to flee to Texas and conflicts with local authorities. When the U.S. entered World War I in 1917, around 200,000 Texans served while the state's economy boomed supplying needs for the war.