The Oklahoma Land Rush
railroads.
Nova - 1974 Alaska The Closing Frontier 5-21 was released on: USA: 28 June 1978
isolationism
People living in the middle
is turner,s west a place a direction or an idea
the closing of the frontier. Santo :)
In the 1880s, fenced in fields had replaced open plains.
rise of United States imperialism
A. closing of the frontier
It encouraged settlers to move west at little expense
Discontented Americans sought a new territory in which to try their luck (: -Nova net