Archduke Franz Ferdinand was assassinated setting off World War I
And 150 years ago, Robert E. Lee and his generals started preparing to invade Pennsylvania, ending with the Battle of Gettysburg, the battle that turned the tide of the American Civil War. U.S. Grant was laying seige to Vicksburg, the last town he needed to fall for the US to seize the Mississippi and divide the Confederacy.
Thomas Sowell: There are no solutions, just trade-offs.