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.
Camden: Gates
Kings mountain: sevier
Happens: Morgan
Guilfors: Greene
5: George Rogers Clark
The best option from the list would be that Latinos in the United States come from different countries, but they all "<span>c. speak the same language", although a far better definition would be geographical. </span>