When the people started losing money or family.
Thomas Jefferson. A committee consisting of Thomas Jefferson, John Adams, Roger Sherman, Benjamin Franklin, and Robert Livingston.
Here u can find all the info u need
http://www.example-lab.com/essays/view/impact-of-urban-geography-and-ecology-on-lives-of-people
According to the US Census the average persons salary in 1916 was about 687$ a year.