theendofthefrontier



The End of the Frontier, in 1870, most of the Great Plains and the Rocky Mountains had a population of less that two people per square mile. As population swelled, unorganized land became U.S. territories, then states. In 1872, government moved to preserve western lands, establishing Yellowstone National Park in the northwest Wyoming, southern Montana, and eastern Idaho. It was the nation's first national park. Finally, in 1890 the head of the Census Bureau announced the official end of the frontier.

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