Answer:
Labor is an indispensable source of economic production, and all other things being equal, more labor contributes to more economic production. During the second industrial revolution factories took full advantage of human labor but set aside workers rights. Following the technological revolutions of the early industrial age, large factories engaged in mass production, supplemented workshops and small foundries. The manufacturing sector expanded from 2.4 to 10 million workers and manufacturing employment grew more than twice as fast as the workforce as a whole from the years 1880 to 1920.
This era of industrial growth transformed American society creating a new class of wealthy entrepreneurs and a comfortable middle class. The increase in industry resulted in a growth among the blue-collar working class. This labor force was made up of millions of newly arrived immigrants and vast numbers of families migrating from rural areas to cities with the hope of job security and prosperity.

Support a large population, which eventually formed into cities
Answer:
There is not an only path in the process of turning an idea into a law at federal and state levels of government, however, the most common path is exemplified as follows:
1. You write your state or federal senator about your idea.
2.The Creation of a Bill. Members of the House or Senate draft, sponsor and introduce bills for consideration by Congress.
3. Introduction of Legislation - A Member of Congress can submit a bill for introduction at any time during a Chamber's daily session.
4. Committee Action - The bill is referred to the appropriate committee by the Speaker of the House or the presiding officer in the Senate
5. Floor Action - The bill goes to the House for action.
6. Resolving Differences Between the House and Senate Versions
7. Presidential Action. ...
8. The Creation of a Law
It is secondary becuase 1935 was a while ago so that means the letter was old