1898 - Spanish American War -1905 - Noted Philosopher George Santayana Publishes The Life of Reason -1929 - United States Begins Its Mexican American Repatriation Campaign -1936 - Dennis Chavez is First Hispanic Elected to the U.S. Senate -1944 - Luis Walter Alvarez Helps Develop Atomic Bomb -1949 - Pancho Gonzales Becomes First Hispanic American Superstar