American Frontier

The American Frontier is the culture that goes with the United States expanding westward. It began with the initial colonization of the United States in the 17th century, and continued into 1912. It led to expansionist feelings, starting at the Louisiana Purchase.
Periodization 
Historians disagree on when the Frontier era began. Brian W. Dippie, "American Wests: historiographical perspectives." American Studies International 27.2 (1989): 3–25.
References

Category:United States