On this day: May 7

POSTED: 01:54 PM MDT May 06, 2013    UPDATED: 12:00 AM MDT May 07, 2013 
Joan of Arc, Siege of Orleans, 1429

Joan of Arc leads the French to victory, the Germans sink the Lusitania, the Nazis surrender, the 27th Amendment is ratified after two centuries, and Mercedes-Benz and Chrysler announce a $40 billion merger, all on this day.