History of the United States

it was to protect the rights of the workers in factories so they have the right to protest, get compensated if they get injured working, etc.

To speak with one voice.

middle class whites

Lower prices for grain storage was a political goal for farmers in the 1800s.

they had a duty to improve society.

lack of windows

Government corruption was fought by progressives and muckrakers- apex

If you mean 'graft' as another word for bribery: no, progressives certainly don't support that.

African American members

The strike ended with Frick (plant GM) hiring replacement workers for the mill under the protection of the Pennsylvania State Militia. Once he successfully got the plant running again, he simply waited out the strikers, until they began ignoring the strike and returning to work under Frick's conditions (the conditions that he had originally proposed, which had led to the strike). Within two months, nearly all of the striking workers that management wanted back had returned to work, the rest being permanently replaced.