George Washington defeated the Hessians at Trenton.
James H. Nason received a patent for a coffee percolator.
The first Kwanzaa is celebrated.
The 33rd president of the United States, Harry S. Truman, died in Kansas City, Mo.
Zoologist Dian Fossey was found murdered in Rwanda.
JonBenet Ramsey was found murdered in her Boulder, Colo., home.
In the Indian Ocean, a 9.0 magnitude earthquake, the largest in 40 years, triggered a tsunami that ultimately killed more than 280,000.