Answer:
The United Nations
Explanation:
The US as well as many other countries are involved in this organization.
What does American Frontier mean in the 19th century (not tv show)
Answer:
American Frontier
Explanation:
American frontier, in United States history, the advancing border that marked those lands that had been settled by Europeans. It is characterized by the westward movement of European settlers from the original Atlantic coast (17th century) to the Far West (19th century).