What would be hailed as the “frontier topic,” Turner declared that the end of the frontier marked “the closing of a great historic movement” the colo-nization of the Great West.

In what would be hailed as the “frontier topic,” Turner declared that the end of the frontier marked “the closing of a great historic movement”—the colo-nization of the Great West. He explained that the fron-tier had been “the meeting point between savagery and civilization.” At this intersection, the Europeans had been “Americanized” by the wilderness. […]