5.what problem did frederick jackson turner's frontier thesis

expose?

a. america's unique development could not continue in

the absence of a frontier.

b. intervention in international affairs would cause

domestic interests to suffer.

c. the u. s. navy needed to be modernized.

d. the purchase of alaska was a bad idea.

A. America's unique development could not continue in the absence of a frontier.

Explanation:

He stressed the process—the moving frontier line—and the impact it had on pioneers going through the process. He also stressed results, especially that American democracy was the primary result, along with egalitarianism, a lack of interest in high culture, and violence.

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.