shot heard round the world

phrase4

1. •
   The opening volleys of the Battles of Lexington and Concord during the American Revolution.
2. •
   The shooting of Archduke Franz Ferdinand and Duchess Sophie on 28 June 1914 that was the casus belli of the Great War.
3. •
   Any cataclysmic event
4. •
   A 1951 home run by Bobby Thomson of the New York Giants