On this day: December 20

POSTED: 11:21 PM MST Dec 19, 2012    UPDATED: 12:00 AM MST Dec 20, 2014 
U.S. invasion of Panama, 1989

The Louisiana Purchase is completed, South Carolina secedes from the U.S., Edison demonstrates his incandescent light, Elvis gets drafted, and the U.S. invades Panama, all on this day.