America's Best History - U.S. History Timeline. All About Explorers. News: "What Happened? The Story of September 11, 2001" Episode Clip. New York rising: 12 years since 9/11. U.S. History: Free streaming history videos & activities. Crash Course! Test your geography knowledge - World continents and oceans. EyeWitness to History - history through the eyes of those who lived it.