Wikipedia:Selected anniversaries/March 5

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This is a list of selected March 5 anniversaries that appears on 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 soon will 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 5–6 events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is not generally posted this year if it is also the subject of the scheduled March 5, 2019 featured article or the March 5, 2019 featured picture.

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.

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Blurb Reason
; St Piran's Day in Cornwall, United Kingdom intro too short
1496 – King Henry VII of England issued letters patent to John Cabot and his sons, authorising them to explore unknown lands. refimprove section
1616Nicolaus Copernicus's De revolutionibus orbium coelestium, describing his heliocentric theory of the Solar System, was prohibited by the Roman Catholic Church. refimprove section
1770 – British soldiers fired into a crowd in Boston, Massachusetts, killing five civilians. neutrality issues
1811Peninsular War: In the Battle of Barrosa, an Anglo-Spanish-Portuguese force trying to lift the Siege of Cádiz was able to defeat a French attack, although they were ultimately unable to break the siege itself. refimprove section
1850 – The Britannia Bridge, a tubular bridge of wrought iron rectangular box-section spans crossing the Menai Strait between the island of Anglesey and the mainland of Wales, opened. more footnotes
1872 – American entrepreneur and engineer George Westinghouse patented the air brake, allowing trains to stop more reliably. needs more footnotes
1918Bolshevist Russia relocated its capital from Petrograd to Moscow. refimprove
1946 – The term "Iron Curtain", describing the symbolic, ideological, and physical boundary dividing Europe into two separate areas during the Cold War, was popularized by former British Prime Minister Winston Churchill during a speech at Westminster College in Fulton, Missouri. unreferenced section
1970 – The international Nuclear Non-Proliferation Treaty to limit the spread of nuclear weapons entered into force. refimprove section, needs update
1975 – Computer hackers in Silicon Valley held the first meeting of the Homebrew Computer Club, whose members would go on to have great influence on the development of the personal computer. unreferenced section
1999Paul Okalik was elected as the first premier of the Canadian territory of Nunavut. refimprove section
Elaine Paige (b. 1948) unreferenced section


March 5: Learn From Lei Feng Day in China

Sinclair ZX81
Sinclair ZX81

Gerardus Mercator (b. 1512) · Marietta Piccolomini (b. 1834) · Lena Baker (d. 1945)

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