Despite the difficulty of travel, the US expanded significantly between the 1800s and the early 1900s. To prepare for a performance task assessment on the rapid expansion of the US in the 1800s, class members engage in a...

Once Americans won the Revolutionary War, their quest to gain land did not end. An interesting activity focuses on Americans' expansion into the frontier following the war and how it conflicted with Native Americans living in the area....

Lewis and Clark's famous expedition is a prime example of the United States' westward expansion. Aspiring historians examine maps from Lewis and Clark's journey, as well as discuss their interactions with Native American tribes. The...

The Treaty of Guadalupe Hidalgo ended the Mexican-American War, but it did not end tensions between the two nations. The activity provides learners with an opportunity to practical historical analysis with text experts from the Treaty of...

Read about the settling of Oregon country and how westward expansion prompted Congress to make it a territory.

[Free Registration/Login Required] A letter from Sara Makpah who lives in Canada to her pen pal living in New York City. A question sheet is available to help students build skills in reading comprehension.

A secondary account from a contemporary historian that examines early nineteenth century forces and the interplay of markets and territorial expansion.

A brief look at the life of American explorer, Meriwether Lewis. Provides a historical map of the Oregon Territory, a portrait of Lewis, and a photograph from Little Belt Mountain.

This Library of Congress timeline series discusses the Louisiana Purchase.