Question

Which of the following terms refers to a territory beyond what is known or settled?

pioneer
continent
frontier
trapper

Answer 1

The answer is A. pioneer. 
Hope this helps

Answer 2

Answer:

The "Frontier" refers to a "territory beyond" what is known or settled. It is also sometimes referred to as a 'Front'. In its true meaning, it is a political or geographical area which is either near or is beyond to a defined boundary of a territory, country or confinement. The term originated in the 15th century from a word "Frontis" which means front or brow and in this case denotes borderland.