4 main concepts in the progressive era

1. Social and Political Reform: The Progressive Era was a time of social and political change in the United States, with a focus on improving living and working conditions, addressing issues of corruption and inequality, and expanding democracy through reforms such as direct election of senators and women's suffrage.

2. Regulation of Big Business: Progressives pushed for increased regulation of big businesses and monopolies, which had amassed significant power and influence during the Gilded Age. This led to the passage of laws such as the Sherman Antitrust Act and the creation of regulatory agencies like the Interstate Commerce Commission and the Food and Drug Administration.

3. Conservation and Environmentalism: The Progressive Era saw significant advancements in conservation and environmental protection, with the establishment of national parks such as Yellowstone and Yosemite, as well as the passage of legislation like the Antiquities Act and the creation of the United States Forest Service.

4. Labor Rights and Social Welfare: Progressives advocated for greater protections for workers, including the establishment of laws regulating working conditions, wages, and hours. They also pushed for social welfare policies such as the creation of a minimum wage, workers' compensation, and unemployment insurance. This period laid the foundation for the modern labor movement and social safety net in the United States.