Book excerpt: In the 19th century, thousands of Americans left their homes behind and set out for a life on the western frontier. This period of westward expansion had a huge hand in shaping the culture and identity of the United States. This title explores the push and pull factors that encouraged settlers to migrate, including the Homestead Act and similar policies. The text uses historical context and primary sources to provide a comprehensive look at westward expansion. Written to support elementary social studies curricula, readers will walk away with an understanding of the 19th century American West and the legacy settling it left behind.