United States History often exemplifies the famous quote by Dr. Martin Luther King Jr., “The arc of the moral universe is long, but it bends towards justice.” Political and social movements since the reform era of the 1830s have required immense effort from ordinary people to actively participate in that bending. This inquiry focuses on the labor movement during the Progressive era and allows students to see the community-building and solidarity inherent in this movement. Students will flex their argumentation skills by utilizing evidence from multiple sources that draw from a variety of labor