pt. 1. Liberty and union : The Colonial era -- The American revolution -- The War of 1812 -- The Texan war for independence, 1836 -- The American Civil War, 1861-1865 -- pt. 2. The Trail of Tears : Indian wars in the East -- Indian wars in the West -- pt. 3. The Halls of Montezuma : The Mexican wars, 1846-1848 -- The Spanish-American War, 1898 -- The Mexican punitive expedition, 1916-1917 -- pt. 4. The Yanks are coming : World War I -- World War II in Europe -- pt. 5. The open door : The Far East before 1941 -- World War II in the Pacific -- Korea.