Theodore Roosevelt (1901–1909; left), William Howard Taft (1909–1913; center) and Woodrow Wilson (1913–1921; right) were the main progressive U.S. Presidents; their administrations saw intense social and political change in American society.
Humanism put emphasis on humans, rather than something like God. This led to the widespread rejection of blindly accepted theology, and led to the development of the scientific method.
True also called the Protestant reformation one of the main figures recognized with this movement is Martin Luther with his 95 thesis pointing out the churches faults that needed fixing bt he never intended for a reformation.