Here are the suggested answers to your questions:
Question 21: nativist sentiment
Question 22: poor people in urban areas
Question 23: Social Darwinism
Question 24: It is the responsibility of those who are more fortunate to provide assistance to needy U.S. citizens.
Question 25: the Haymarket Riot
Question 26: labor reformer agitation
Question 27: pay increases for workers
Question 28: activities of political machines
Question 29: Connected Serving the Poor with Salvation
Question 30: Their leaders won international acclaim.
Question 31: Mother Jones
Question 32: Because trusts are not all bad, only those trusts which employ practices that do not benefit the public as a whole should be abolished.
Question 33: Progressive Era muckraking journalism
Feel free to ask if you need further assistance or explanations on any of these topics!