Wikipedia:Selected anniversaries/December 9
This is a list of selected December 9 anniversaries that appear in the "On this day" section of the Main Page. To suggest a new item, in most cases, you can be bold and edit this page. Please read the selected anniversaries guidelines before making your edit. However, if your addition might be controversial or on a day that is or will soon be on the Main Page, please post your suggestion on the talk page instead.
Please note that the events listed on the Main Page are chosen based more on relative article quality and to maintain a mix of topics, not based solely on how important or significant their subjects are. Only four to five events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is generally not posted this year if it is also the subject of the scheduled featured article, featured list or picture of the day.
To report an error when this appears on the Main Page, see Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.
December 9: Independence Day in Tanzania (1961); Army Day in Peru
- 1425 – Pope Martin V issued a papal bull establishing the Catholic University of Leuven, the largest, oldest and most prominent university in Belgium.
- 1856 – Anglo-Persian War: Bushehr, a city on the southwestern coast of the Persian Gulf in present-day Iran, surrendered to occupying British forces.
- 1905 – Legislation establishing state secularism in France was passed by the Chamber of Deputies of France, triggering civil disobedience by French Catholics.
- 1968 – The NLS, a computer collaboration system that was the first to employ the practical use of hypertext, the computer mouse, and other modern computing concepts, was publicly demonstrated for the first time in San Francisco.
- 1990 – Lech Wałęsa (pictured) became the first President of Poland to be elected in a direct presidential election after the collapse of communism across Eastern Europe.