The Progressive Era from 1890-1915 was a period of widespread social activism and political reform across the United States. Reformers worked to address issues like women's suffrage, child labor, prohibition, conservation, and trust-busting. During this time, immigration increased substantially and many immigrants came from Eastern and Southern Europe. Urbanization also grew as documented by Jacob Riis and Lewis Hine, who showed the poor living conditions faced by immigrants and child laborers. Notable progressive leaders included Theodore Roosevelt, Woodrow Wilson, and reformers who sought to clean up corrupt machines and humanize big business through efficiency and regulation. A variety of influences shaped the progressive movement, including pragmatism, social gospel teachings, muckraking