United States 1865-1917 By nadiamaguire Period: 1865 to 1901 2nd Industrial Revolution Period: 1865 to 1890 Westward Expansion Period: 1865 to 1896 Gilded Age Period: 1867 to 1877 Reconstruction Period: 1872 to 1917 Age of Imperialism Period: 1890 to 1920 Progressive Movement