Wikipedia:Selected anniversaries/April 4
This is a list of selected April 4 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.
April 4: Easter (Christianity, 2010); Qingming Festival in the Chinese calendar; Hansik in South Korea; (2024); Children's Day in Taiwan and Hong Kong
- 1721 – Robert Walpole took office as First Lord of the Treasury, Chancellor of the Exchequer and Leader of the House of Commons, becoming what would later be recognised as the first British Prime Minister.
- 1850 – Los Angeles was incorporated as a municipality, five months before California achieved U.S. statehood.
- 1949 – Twelve nations signed the North Atlantic Treaty, creating NATO, an organization that constitutes a system of collective defense whereby its member states agree to mutual defense in response to an attack by any external party.
- 1968 – American civil rights leader Martin Luther King, Jr. (pictured) was assassinated.
- 1975 – Bill Gates and Paul Allen founded Microsoft in Albuquerque, New Mexico, U.S., to develop and sell BASIC interpreters for the Altair 8800.