20 Important Dates By calvinhenkels 1840 Westward Expansion 1865 The Era of Reconstruction 1870 The Gilded Age 1870 Rise of Big Businesses 1876 The Collapse of Reconstruction 1892 Farmers Revolution 1901 Roosevelt's Big Stick Foreign Policy 1914 World War One 1916 The Great Migration 1918 The Jazz Era 1920 The New American Consumer Culture 1920 New voices for Women and African Americans 1929 Stock Market Crash 1929 The Great Depression 1930 Hoover's Foreign Policy 1932 The New Deal 1941 World War Two 1945 Dropping the Atomic Bomb 1945 World War Two Ends 1947 The Cold War