What was the "Shot heard 'round the world"?
There are actually several historical shots "heard 'round the world." The most famous in American history originated in Ralph Waldo Emerson's 1837 poem, "Concord Hymn," when he refers to the first shot fired at Lexington and Concord that sparked the American Revolution. In Europe, the term refers to the bullet that killed Archduke Franz Ferdinand, the heir to the throne of Austro-Hungary, and the shot that ignited the beginning of World War I. On a less deadly or warlike note, in baseball terminology, the shot heard 'round the world came off the bat of Bobby Thomson, when his walk-off home run (before it was even known as a walk-off homer) won the one-game National League playoff for the New York Giants in 1951.