n.
1.United States explorer who (with Meriwether Lewis) led an expedition from St. Louis to the mouth of the Columbia River
2.United States general who was Allied commander in Africa and Italy in World War II and was commander of the United Nations forces in Korea (1896-1984)
3.United States psychologist (born in Panama) whose research persuaded the Supreme Court that segregated schools were discriminatory (1914-)
4.Canadian politician who served as prime minister (1939-)
