Roosevelt’s Corollary infulnced the US foreign policy by displaying how the united state would take a more aggressive role in the world.
The correct answer is the Monroe Doctrine.
The Monroe Doctrine focused on preventing future European influence in the Western hemisphere. President Monroe promised that the US would not interfer with any European colonies that were already established at the time of this doctrine (1823). However, Monroe went on to say that any future attempts at colonization would be met with a US military response.
The ultimate goal of this was to isolate the US from European conflicts.
There were no child labors laws nor working unions the rights of employees were at the mercy of what was needed and unexistant.
The industrial revolution was a very contaminated and polluted dark snoky dirty ashy and sick period of history
Another hardship especially for coal miners was the same thing we have know implosion in short terms it is a combination of physical & emontional pollution that took over many lives
~ hope this helps