1911
22,000 U.S. troops protected Americans along the Mexican border from the nearby battles of the
Mexican Revolution.
Mark Twain (Samuel Clemens) died April 21st at age 75.
John Philip Sousa's 100-piece band finished a two-year tour of the world, which helped
popularize American marching music.
Irving Berlin's Alexander's Ragtime Band reflected ragtime's 10-year emergence as an
American music genre.
