This textbook is the sixth volume of Theodore Roosevelt's six-volume account of the exploration and settlement of the United States from the Alleghanies to the Pacific. Chapters include: (1) Intrigues and Land Speculations--The Treaties of Jay and Pinckney, 1793-1797; (2) The Men of the Western Waters, 1798-1802; (3) The Purchase of Louisiana; and Burr's Conspiracy, 1803-1807; and (4) The Explorers of the Far West, 1804-1807. An appendix provides information on source documents. [For Volume V, see ED623801.]