Editing 1933 (section)

=== December ===
{{Main|December 1933}}
* [[December 5]] – The [[Twenty-first Amendment to the United States Constitution]] is ratified, [[Repeal of Prohibition in the United States|repealing Prohibition in the United States]], making production and sale of alcohol legal in the U.S.
* [[December 17]] – The [[1933 NFL Championship Game|first NFL Championship game]] in American football is played. The [[Chicago Bears]] defeat the [[New York Giants]] 23–21.
* [[December 21]] – [[Dominion of Newfoundland|Newfoundland]] returns to [[Crown colony]] status, following financial collapse.<ref name=CBH/>
* [[December 23]] – [[Lagny-Pomponne rail accident]]: A train collision near [[Lagny-sur-Marne]] in France kills 204.
* [[December 26]]
** [[Montevideo Convention]] on the Rights and Duties of States is signed by participants in the 7th [[International Conference of American States]]; it is significant in the development of the [[Sovereign state#Declarative theory|declarative theory of statehood]].<ref>{{Cite web|url=https://uia.org/s/or/en/1100005689|title=Convention on Rights and Duties of State|year=2024|department=UIA Global Civil Society Database|website=uia.org|publisher=[[Union of International Associations]]|agency=Yearbook of International Organizations Online|location=Brussels|access-date=2025-01-12|url-status=}}</ref>
** The [[Nissan Motors|Nissan]] Motor Company is organized in Tokyo, Japan.
** [[Frequency modulation|FM radio]] is patented.
* [[December 29]] – Members of the [[Iron Guard]] assassinate [[Ion Gheorghe Duca]], prime minister of [[Romania]].