D. Johnston, Louis. "History Lessons: Understanding the Decline in Manufacturing."MinnPost. Web. 15 Dec. 2014. <http://www.minnpost.com/macro-micro-minnesota/2012/02/history-lessons-understanding-decline-manufacturing>.
The graph above shows the amount of people employed in what field during the Industrial revolution.
In 1915, there was a spike in workers employed in the industry, at 35%. It seems, though, that many
people were employed in the Agricultural field from 1840-1870. But people left that field around 1920,
moving to cities to work in factories. Many people left their homes and farms for the promise of jobs
for higher wages. Many families left to escape poverty. The rapid growth of cities fed Political
machines which, in turn created the American middle class.