USA HISTORY

Detailed explanation-1: -It began around 1840 and lasted to 1890 and beyond, when the federal census announced the end of the frontier era.

Detailed explanation-2: -In 1890, the Census Bureau broadcast the closure of the frontier, meaning that in the west there was no apparent tracts of land without settlers. This news was a distinguished event in American history; the frontier represented danger because of the Natives who lived in the region but also freedom and opportunity.

Detailed explanation-3: -In 1890 the Bureau of the Census announced that the frontier was closed, that is, there was no longer any discernible demarcation between frontier and settlement.

Detailed explanation-4: -The 1890 census had shown that a frontier line, a point beyond which the population density was less than two persons per square mile, no longer existed. The announcement impressed Frederick Jackson Turner, a young historian at the University of Wisconsin.

Detailed explanation-5: -In 1890, the U.S. Bureau of the Census said the American frontier was “closed” by the spread of white settlers, who were said to have tamed the wilderness.