Historical Thinking-Era Overview By marisaharo Aug 25, 1763 American Revolution Aug 25, 1783 The new Nation Aug 25, 1815 expansion n reform Aug 25, 1861 civil war Aug 25, 1865 reconstruction Aug 25, 1865 westward expansion Aug 25, 1877 the gilded age Sep 25, 1898 u.s. imperialism Aug 25, 1900 progressive era Aug 25, 1914 world war 1 Aug 25, 1920 the roaring twenties Aug 25, 1929 great depression Aug 25, 1939 world war 2 pearl harbor holocaust adolf hitler europe and the pacific atomic bomb Aug 25, 1945 cold war soviet union Aug 25, 1954 civil rights movement martin luther king rosa parks sit ins Aug 25, 1954 vietnam war part of cold war draft antiwar movement Aug 25, 1970 late 20th century Aug 25, 2015 u.s. in the 21st century 2000-present