The united states changed in many ways. population in 1770 was 2,148,100. population in 1870 was 38,558,371 the very most important event was the american civil war. the civil war was from 1861-1865. this started the 14th Amendment which defined a citizen. it said as "any person born or naturalized in the us." the 13th amendment abolished slavery, and the 15th amendment prohibits denying the right to vote to someone because of their race. other events include the louisiana purchase, the texas revolution, the spanish-american war, the war of 1812, the purchase of alaska, the mexican cession, the indian wars, and the california gold rush.the right to vote was extended to all male citizens by the 15th amendment. women were not given the right to vote until the 19th amendment was passed in 1920.
1) The population has increased because of the immigration and slaves. 2) The population grew in leaps and bounds, primarily through immigration. 3) Roads, waterways, railroads, steam boats, and refrigerator railroad cars. 4) * Changes in transportation played a big part in the change of United States. * The change in the industry such as more factories being opened. * Many women had made progress in doing things that men would usually do. * Changes were made to the Constitution. 5) The 14th Amendment had defined a citizen as "any person born or naturalized in the U.S." The 13th Amendment abolished slavery, and the15th Amendment prohibits the right to vote to someone due to their race, color,or servitude. Hope I helped :) Good luck
