Why did settlers believe that Native American land was theirs for the taking?

the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.

the answer is "focused on"

lol gave an answer 1 week that's the answer for those who need it in the future xd

polticians and sentates thought to annoucne the fialre of articles of confedartion by making a centralized nation as a hole