Wikipedia:Selected anniversaries/December 2
- 1804 - The Crown of Charlemagne was used at the coronation of Napoleon I of France (pictured) at Notre Dame Cathedral in Paris.
- 1823 - U.S. President James Monroe issued the Monroe Doctrine, a proclamation of opposition to European colonialism in the New World.
- 1942 - The Manhattan Project: Scientists led by Enrico Fermi initiated the first self-sustaining nuclear chain reaction in the experimental nuclear reactor Chicago Pile-1.
- 1971 - Abu Dhabi, Ajmān, Dubai, Fujairah, Sharjah, and Umm al-Qaiwain merged to form the United Arab Emirates.
- 1975 - The Pathet Lao overthrew the royalist government in Vientiane, forcing King Savang Vatthana to abdicate, and established the Lao People's Democratic Republic.
Recent days: December 1 – November 30 – November 29
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