i'm having a test tomorrow and my teacher is going to pick one of the three essay topic. i'm trying to make an outline so can anyone help please?

1. between 1870 and 1920 the US was the most productive industrial economy in the world. describe how three of the following contributed to the massive industrialization of the US after the civil war.
a. the US west
b. US government action
c. technical and scientific innovation
d. cheap labor

2. identify three strategies used by Americab workers in attempting to improve their lives from 1870 to 1920. describe the successes and failures of eace of these strategies.(be sure to include a consideration of women and ethnic groups as well as native, white, male workers.)

3. explain WHY, in the US between 1870 and 1920, wealth became more concentrated a) in the upper class and b) in the largest corporations. describe the attitude with which various american intellectuals and writers greeted this increased concentration of wealth.