Unit one gave us insight on events that took place through the 1800s - post Civil War era. Some important concepts that I have taken with me from the chapter are the influx of migrants moving from east to west for work and jobs. In this time period 100,000 workers were a primary role in developing California’s economy. There was more to this than just migrating west. This time period showed the relationship between American and Native American’s. Another concept was the development of the railroad and how impacted industrial America. The railroad was a form of transportation and could travel between California and New York. While there were benefits there are also negative consequences such as relocating Native Americans from their lands, destroying their way of life and culture. It also brought war between the two; the military was used to fight tribes. Lastly a takeaway from the unit was also the depletion of American Bison as the leather industry spiked. They were also being killed in an effort to starve out the Native Americans. The population went from the millions to a few hundred left. Unit 1 has brought insight of the American West culture, relationships between Americans and Native Americans, and how the American Bison were on the verge of extinction.