America's entry into World War I diverted the energy of reformers, and after the war progressivism virtually died. Its legacy endured, however, in the political reforms that it achieved and the acceptance that it won for the principle of government regulation of business. Most of the social-welfare measures advocated by progressives had to await the New Deal years for passage.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.