Wikipedia:Selected anniversaries/October 19
October 19: Double Ninth Festival in the Chinese calendar (2007); Constitution Day in Niue; Mother Teresa Day in Albania.
- 202 BC – Proconsul Scipio Africanus of the Roman Republic defeated Hannibal and the Carthaginians in the Battle of Zama, concluding the Second Punic War.
- 1469 – Ferdinand II of Aragon wedded Isabella of Castile (pictured), a marriage that paved the way to the unification of Aragon and Castile into a single country, Spain.
- 1781 – American Revolutionary War: British forces led by Lord Cornwallis officially surrendered to Franco-American forces under George Washington, ending the Siege of Yorktown.
- 1943 – Streptomycin, the first antibiotic remedy for tuberculosis, was first isolated by researchers at Rutgers University.
- 1987 – The Dow Jones Industrial Average fell by 22.6% on Black Monday, the largest one-day percentage decline in stock market history.
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