The United States changed so many things from 1770 to 1870. The population increased drastically, from 2,148,100 in 1770 to 38,558,371 in 1870. The increase in population is caused by immigration of people to the US and slavery was another cause. Slavery and population had a big affect on the next 100 years of the United States history. The US also changed diversely with new innovations like roads, waterways, railroads, steam boats, and refrigerated railroad cars.
A few new innovations that changed or improved from 1776 to 1870 are the roadways, waterways, railroads, steam boats, and refrigerated railroad cars. Roadways were an innovation that created a way for easier, and faster transportation. Waterways were also a way for transportation, to cut out a lot of land, and cut out time. Waterways are a faster way for trade and barter. Steam boats were what pioneers used to travel down the waterways to trade and sell goods. Railroads were still used for closer travel, with items that did not need to get there as fast as possible, because railroad cars do not move very fast, although the steam engine improved the speed of transportation also.
The United States did make rather large changes over 100 years, from 1776 to 1870. It all started with the signing of the Declaration of Independence, which lead to us fighting for our freedom. During this period of time the constitution was ratified, the Revolutionary war ends, and the Louisiana Purchase takes place. Factories advanced and cities were industrializing, and many different machines were invented that changed the way the industrial world worked. Women played an important role in the changes that were made in the US during this century. Women were not just the “stay at home and clean” women anymore, they were aloud to join the workforce and take on roles that before, only the men were aloud to have. The constitution was ratified during this time also.
The United States changed in so many ways over a century. People grew in knowledge and ability to create these machines that changed the workforce.
Factories were improved and the cities industrialized and caused many people to migrate to the US causing the population to increase drastically. Slavery had always been a big issue in the US, and it was decreased immensely, although the blacks were still segregated. The machines that were built innovated the way the people thought and created a new ball park for new innovators to create new things to keep the world moving forward.