Events leading up to World War I By Alyssa Spann Jul 14, 1870 Bismarck turned up diplomatic heat Jul 19, 1870 Declaring war against Prussia five days later Jun 28, 1914 World War One Jun 28, 1914 Sarajevo' Town Hall Jul 1, 1914 One Thing Lead To Another Jul 28, 1914 Austria-Hungary sought after cue declared war Aug 1, 1914 War On Russia Aug 1, 1914 Austria-Hungary warming declared war on Russia Aug 4, 1914 Germany invasion Beligum Aug 4, 1914 France declared war against Germany Aug 23, 1914 Declared war on Germany Apr 6, 1917 Force the U.S. to finally enter the war
