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What Happened Today in History on December 18

Explore the historical events that shaped our world on December 18th. From major milestones to cultural achievements, see what happened on this day in history. Dates for earlier events may be approximate.

The birth of Cicero, one of Rome's most famous orators, statesmen, and philosophers.

King Alfonso I of Aragon captures the city of Zaragoza from the Almoravids control during the Reconquista after a siege which lasted about eight months before the city fell on December 18th, 1118.

Pope Celestine V abdicates the papacy, becoming one of the few popes to voluntarily resign.

The Joseon Dynasty in Korea repels the Japanese invasion during the Battle of Wihwa Island.

New Jersey ratifies the Articles of Confederation becoming the third State.

The WWI battle of Verdun ends. The engagement in which the French repulsed a major German offensive was one of the longest, bloodiest, and most-ferocious battles of the war, lasting for almost a year. French casualties amounted to about 400,000, German ones to about 350,000. Some 300,000 were killed. More

Battle of Hong Kong . Japan attacks the Island of Honk Kong as a continuation of an attack on the British Colony which started on December 7. A Japanese force of around 35,000 strong was faced by a defending force of 13,500 British, Indian, Canadian, and local troops. Hong Kong surrendered on Christmas Day 1941 and Hong Kong entered a period of Japanese rule that lasted for three years and eight months. More

Charles de Gaulle is reelected as the President of France.

India annexes the territories of Goa, Daman, and Diu, ending Portuguese colonial rule in the region.

The last convoy of U.S. troops leaves Iraq, officially marking the end of the Iraq War. Violence continued and in fact worsened over the subsequent years. As of the end of 2024, the U.S. still has a military presence of about 2,500 personnel in Iraq as part of the Combined Joint Task Force-Operation Inherent Resolve effort. Talks continue on Security cooperation. More