Wikipedia:Selected anniversaries/December 25

December 25: Christmas in Western Christianity.

• 800 – Pope Leo III crowned Charlemagne emperor, a title that had been out of use in the West since the abdication of Romulus Augustus in 476.

• 1776 – American Revolutionary War: George Washington and his army crossed the Delaware River to launch a surprise attack on Hessian mercenaries at the Battle of Trenton.

• 1947 – The Constitution of the Republic of China went into effect, amid the ongoing Chinese Civil War between the Kuomintang and the Communists.

• 1950 – The Stone of Scone, the traditional coronation stone of Scottish monarchs, English monarchs, and more recently British monarchs, was stolen from London's Westminster Abbey by a group of four Scottish students. It later turned up in Scotland on 11 April 1951.

• 1991 – Mikhail Gorbachev (pictured) resigned as President of the Soviet Union.

More anniversaries:

• December 24
• December 25
• December 26