From the Louisiana Purchase to the Oregon Trail: America's
The Frontier Era is one of the most important and fascinating periods in American history. This period, which lasted from roughly 1800 to 1890, was marked by westward expansion and the settlement of the American frontier.
Oregon Trail Facts: Lesson for Kids - Lesson
Westward Exploration and Settlement of the United States c.1850
California Trail - Wikipedia
Oregon and Overland Trails - U.S. History for Kids!
The Louisiana Purchase and Exploring the West
Oregon Trail: Trail to Oregon
The Louisiana Purchase
Final frontiers: The Oregon Trail
A map of the Louisiana Territory, 1806