Progressivism is a term that refers to a broad school of international social and political philosophies. The term progressive was first widely used in late 19th century America, in reference to a general branch of political thought which arose as a response to the vast changes brought by industrialization, and as an alternative both to the traditional conservative response to social and economic issues and to the various more or less radical streams of socialism and anarchism which opposed them. Political parties such as the American Progressive Party organized at the start of the 20th century, and progressivism made great strides under American presidents Theodore Roosevelt, William H. Taft, Woodrow Wilson, and Franklin Delano Roosevelt.
Progressivism historically advocates the advancement of workers' rights and social justice. The progressives were early proponents of anti-trust laws and the regulation of large corporations and monopolies, as well as government-funded environmentalism and the creation of National Parks and Wildlife Refuges.