The Progressive Era (8 St. 10 Min, 30 Aug 1890 Jahr – 15 St. 39 Min, 22 Jul 1920 Jahr)
Beschreibung:
 social activism and political reform across the United States that fought for the eliminating problems caused by industrialization, urbanization, immigration, and political corruption. ( Suffrage, Muckrakers, Populist) 
Zugefügt zum Band der Zeit:
Datum:
8 St. 10 Min, 30 Aug 1890 Jahr
15 St. 39 Min, 22 Jul 1920 Jahr
 ~ 29 years