What problem did Frederick Jackson Turner's frontier thesis expose?
(1 point)
Responses
America's unique development could not continue in the absence of a frontier.
America's unique development could not continue in the absence of a frontier.
Intervention in international affairs would cause domestic interests to suffer.
Intervention in international affairs would cause domestic interests to suffer.
The U.S. Navy needed to be modernized.
The U.S. Navy needed to be modernized.
The purchase of Alaska was a bad idea.