Wikipedia:Selected anniversaries/September 12
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September 12: National Day in Cape Verde
- 1683: Great Turkish war: Polish troops led by Jan III Sobieski (pictured) joined forces with a Habsburg army to defeat the Ottoman Empire at the Battle of Vienna.
- 1933: Leó Szilárd conceived of the idea of the nuclear chain reaction.
- 1942: The Laconia incident: RMS Laconia, carrying some 80 civilians and 268 British soldiers, and about 1800 Italian POWs with 160 Polish soldiers on guard, was struck by a torpedo from a U-boat off the coast of West Africa and sank.
- 1977: South African anti-apartheid activist Steve Biko was killed in police custody.
- 1992: Abimael Guzmán, leader of the Peruvian Maoist guerrilla organization Shining Path, was captured in Lima.
Recent days: September 11 – September 10 – September 9
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