Please elaborate on your question so I can help you..
Answer:
1. Frontier is a transit zone where explorers, pioneers, and settlers come.
2. In America is considered to be a free land where the settlement is very low, only two persons per square mile.
Explanation:
Generally speaking, it is the region on the border of the settled area. The population that represents this movement of frontiers usually moves from east to west.
The best example for frontier is the border that separates Canada and the USA.
Answer:
Its All three
Explanation:
I did it on Edge and tried just B and C and it said it was wrong but when I tried all three it was correct
Marji was upset because it meant she couldn't get a visa to go visit her friend Kaveh in the US; She says, "So, my great dream went up in smoke."