The United States president preserves, protects, and defends the U.S. Constitution. Each president's term influences events in America and around the world for years to come. This biography introduces young readers to the life of James K. Polk, beginning with his childhood in Mecklenburg County, North Carolina, and Columbia, Tennessee. Information about Polk's education at the University of North Carolina and his early career as a lawyer and clerk in the Tennessee state senate is discussed. In addition, his family and personal life, as well as his retirement to Polk Place is highlighted. Easy-to-read text details Polk's political career as a member of the Tennessee House of Representatives, a member of the U.S. House of Representatives, and Speaker of the House. Finally, students will explore key events from Democratic president Polk's administration, including the passage of the Independent Treasury Act, the Oregon Treaty, as well as the Mexican War and the Treaty of Guadalupe Hidalgo, from which the Mexican Cession was gained. Beautiful graphics showcase the primary source documents and photographs. A timeline, fast facts, and sidebars help put essential information at students' fingertips. In addition, a quick-reference chart provides easy access to facts about every U.S. president. Checkerboard Library is an imprint of ABDO Publishing Company.