American frontier, Definition, Significance, & Maps

American frontier, in United States history, the advancing border that marked those lands that had been settled by Europeans. It is characterized by the westward movement of European settlers from their original settlements on the Atlantic coast in the early 17th century to the Far West in the late 19th century.

Not gonna lie, the flat earthers have a way cooler map than what the real world gives us : r/MapPorn

American frontier, Definition, Significance, & Maps

Westward Expansion, 1790–1850, Interactive Map

Following the Frontier Line, 1790 to 1890

Scythian Territorial Expanse - World History Encyclopedia

State by State, American Experience, Official Site

The Great Plains: Map, Region & History, Where are the Great Plains? - Lesson

Ocean floor features National Oceanic and Atmospheric Administration

Weekend Reader - The Significance of the Frontier in American History - Basin and Range Magazine

British Reforms and Colonial Resistance, 1763-1766, The American Revolution, 1763 - 1783, U.S. History Primary Source Timeline, Classroom Materials at the Library of Congress