Answer: the decision by the United States government to prevent additional settlement
Explanation:
What was meant by the "closing" of the Western frontier was that the United States government wanted to prevent additional settlement.
This decision was as a result of the government's plan to promote the westward expansion after the Civil War, but however, they had to close the Western frontier to prevent additional settlers.
There are 8 elements for a group of people to be a religion:
1.) Cities/Towns
2.) Specialization of labor
3.) Education/Art
4.) Form of government
5.) Religion
6.) Writing
7.) Technology
8.) Trade
This was taken directly from my notes. Hope it helped.
<span>A. The Soviets crushed the uprising using military force. </span>