The West Was Seen as the Great This to US Pioneers

This page is the CodyCross answer for the clue below from Renaissance, Group 1394, Puzzle 1 (Leonardo Da Vinci).

Question is: The West Was Seen as the Great This to US Pioneers

and the answer is: FRONTIER

Word Meaning:

FRONTIER — The part of a country which borders or faces another country or unsettled region.

Definitions from Wiktionary.

The West was seen as the great this to US pioneers — CodyCross Answer | CodyCross Solutions