Answer:From the earliest days of European settlement on the Atlantic Coast, pioneers began moving west not just to trade but to live and raise families. This is known as Westward Expansion. Of course, American Indians were already occupying those western lands, setting up conflict situations. In 1832, when the U.S. government tried to enforce the terms of a treaty that demanded removal of the Sac from their major village Saukenuk on the Illinois side of the river. Chief Black Hawk resisted and returned in the spring with a portion of the tribe in defiance of the government order. In the Black Hawk “War” that ensued, U.S. troops and the Illinois state militia quickly routed Indian resistance and forced Sac families to flee. The treaty that followed opened eastern Iowa to American settlement and pushed the Sac and their Meskwaki allies into central Iowa. Treaties between the tribes and the U.S. government eventually provided for relocation of the tribes to western lands and the removal of Indian claim to the land