"During the past three centuries the spread of the English-speaking peoples over the world's waste spaces has been not only the most striking feature in the world's history, but also the event of all others most far-reaching in its effects and its importance." --Theodore Roosevelt, The Winning of the West, Vol. I

The Winning of the West Vol. IV--Louisiana and the Northwest, 1791-1807 (1889) is the last part of Theodore Roosevelt's four-volume exciting saga about the settling of the American West. Many considered this Roosevelt's most important book.

Volume IV focuses on the Indian Wars of 1784-1787, on statehood for Kentucky, Tennessee, and Ohio, and on the peace treaties with Spain and the United Kingdom.