Webexpansion of the united states moved steadily westward from the late 18th to the mid 19th centuries. This territorial movement displaced most of the native. Webhow could the united states justify acquiring territories in the western hemisphere while denying that right to the absolutist european monarchies? Webunder the leadership of president andrew jackson, the indians who remained east of the mississippi were cruelly and violently driven from their homes and concentrated in. Webthe northwest ordinance of 1787 changed american history. It provided that new states shared coequal status with the original thirteen states. It set out the process for. White american settlers began displacing the native american inhabitants of the northwest territory through forced expulsion in the late 18th century. Webduring the american revolutionary war, george rogers clark led american forces against the british in the northwest territory. A significant push toward the west coast of north america began in the 1810s. It was intensified by the belief in manifest destiny, federally issued indian.
