SSC MTS EXAM

Detailed explanation-1: -a border between two countries: Some of the frontier between Germany and Poland follows the course of the river Oder. Nepal has frontiers with both India and China. They lived in a town close to the frontier.

Detailed explanation-2: -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 their original settlements on the Atlantic coast (17th century) to the Far West (19th century).