The homestead act of 1862, railroads, and fertile soil in the west caused a civil war between the east and west had no impact on the settler population forced settlers to partner with indians and create blended communities increased population size of settlers in the west

- encouraging nationalism

- returning to conservative political policies

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44