Daily Quiz for April 21, 2014

Two and a half years. The 8,000-mile expedition officially began on May 21, 1804, from Camp Wood outside St. Louis and returned on September 23, 1806. Because of stops made beforehand in preparation for the journey, such as gathering supplies at Harpers Ferry, (West) Virginia, and Pittsburgh several different sites claim to be where the journey "really began" and give dates earlier than May 21.