Wikipedia:Selected anniversaries/December 1
This is a list of selected December 1 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 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 1: Union Day in Romania (1918); World AIDS Day
- 1640 – John IV was declared King of Portugal, resulting in the Portuguese Restoration War with Spain.
- 1822 – Pedro I was crowned the first Emperor of Brazil, less than two months after he actually began his reign on October 12.
- 1955 – African-American Civil Rights Movement: Seamstress Rosa Parks (pictured) was arrested for violating the racial segregation laws of Montgomery, Alabama, after refusing to give up her seat on a public bus to a white man, precipitating the Montgomery Bus Boycott.
- 1959 – Twelve countries signed the Antarctic Treaty, the first arms control agreement established during the Cold War, banning military activity in Antarctica and setting the continent aside as a scientific preserve.
- 1990 – Channel Tunnel workers from the United Kingdom and France met 40 metres (131 ft) beneath the English Channel seabed.