Which historical circumstances of the late nineteenth century did the Progressives look to when arguing that the principles of the American Founding were no longer operative or valid?

The Progressives looked to the industrialization, urbanization, and social problems of the late nineteenth century to argue that the principles of the American Founding were no longer adequate to address the new challenges facing American society. They believed that traditional limited government and individualism were insufficient to meet the needs of a rapidly changing and increasingly interconnected nation.