through treaties Sign_agreement with foreign nations and native tribes , political compromise Communication , military Military_operation conquest Conquering , establishment Creating of law and order , the building Building of farms , ranches , and towns , the marking of trails and digging Emptying of mines , and the pulling in of great migrations of foreigners , the united states expanded Expansion from coast to coast , fulfilling Achieve the dreams of manifest destiny .

Mass displacements and coercive migrations forced Request millions into refugee camps or across the border , creating Creating a humanitarian crisis .

This migration is regarded as one of the largest peaceful migrations in the world 's history .