Correct answer choice is :
<h2>D) The closing of the frontier</h2><h2 /><h2>Explanation:</h2><h2 />
A time after the Oklahoma Land Rush, the executive of the U.S. Census Bureau declared that the frontier was closed. The 1890 census had shown that a frontier line, a point behind which the population frequency was less than two persons per square mile, no longer survived. This news had a tremendous emotional influence on many Americans.
The Tonkin Gulf Resolution was a joint resolution which the United
States Congress passed on August 7, 1964. It gave power to the
president to use conventional military force without declaration of war.
It basically gave more power to the president then checks and balances
allow.
Between the rivers and mountains
I’m pretty sure sorry I hope you get it right
Answer:
I'm pretty sure it was the Vikings