The key cause was economic hardship
Because it encouraged later revolutions in other parts of the world. :)
Answer:
- Laws
- Income Tax
- Federal Income Tax
- Immigration Reform
Explanation:
Here's a great website for this answer!:
https://courses.lumenlearning.com/boundless-ushistory/chapter/the-progressive-era/
Thank you and be sure to check out the website listed above!
The question is kinda lacking. Probably, it has choices to make the question answerable.
