UXL Encyclopedia of U.S. History The U-X-L Encyclopedia of U.S. History is an 8-volume set that introduces the history of the United States from pre-Colonial America to the present day. It explores the timeline of America: its founders, key historical figures, wars, events, political environment, economy, and culture. Covered eras include: Pre-Colonial; Colonization and Settlement; the Revolution; Expansion and Reform; Civil War ... Full description