Frederick Jackson Turner's Frontier Thesis Argued That

Frederick Jackson Turner's frontier thesis argued that:

A) The prevalence of violence in American society may be explained by the fact that Americans have continually had to tame and civilize a vast wilderness
B) The American character has been shaped by the ever-expanding continental frontier
C) Now that North America has been civilized, the American people will look inward with the goal of creating a truly egalitarian democracy
D) With the passing of the frontier, Americans must fulfill their destiny by acquiring an overseas empire