The main idea behind the settling of western lands by americans in the early 1800s was known as

the manifest destiny concept.

Explanation:

In the  1800s Americans longed for lands in the American West. they focused on settling at  Ohio River, parts of the Southeast and lands west of the Mississippi River. There were various ways of acquiring the lands which were, purchase from foreign empires, Native American treaties, and war. All these methods were from the concept of Manifest Destiny, which was the idea where people believed that it was inevitable and acceptable for the United States to extend from the Atlantic to the Pacific Oceans.

- "a new era of american politics began with jackson's election in 1828, but it also completed a grand social experiment begun by the american revolution. nevertheless, jacksonian democracy represented a provocative blending of the best and worst qualities of american society."

< 3

i believe that the correct answer is a canadian hero.

explanation: he is celebrated as a national hero in canada for successfully thwarting a united states takeover of canada during the war of 1812.