Wikipedia:Selected anniversaries/March 9
March 9: Baron Bliss Day in Belize.
- 1841 – The U.S. Supreme Court ruled that captive Africans who seized control of La Amistad, the trans-Atlantic slave-trading ship carrying them, had been taken into slavery illegally.
- 1842 – Nabucco, an opera by Italian Romantic composer Giuseppe Verdi, premiered at the Teatro alla Scala in Milan.
- 1862 – American Civil War: In the world's first major battle between two powered ironclad warships, the USS Monitor and the CSS Virginia fought to a draw at the Battle of Hampton Roads near the mouth of Hampton Roads in Virginia.
- 1945 – World War II: A bomb raid on Tokyo by American B-29 heavy bombers started a firestorm, killing over 100,000 people.
- 1959 – Barbie (pictured), the world's best-selling doll, debuted at the American International Toy Fair in New York City.