Historical Events on March 18
- 1766: The Stamp Act is repealed by the British Parliament.
- 1793: Andreas Joseph Hofmann declares the Republic of Mainz – the first modern German republic.
- 1850: William Fargo and Henry Well found American Express.
- 1871: Adolphe Thiers orders that the city of Paris be evacuated.
- 1874: Hawaii signs a treaty with the U.S that grants exclusive trade rights with them.
- 1913: King George I of Greece is assassinated in Thessaloniki.
- 1937: Italian forces are defeated at the Battle of Guadalajara during the Spanish Civil War by Spanish forces.
- 1940: Adolf Hitler and Benito Mussolini form an alliance against the U.K and France at a meeting held at Brenner Pass in the Alps during World War II.
- 1953: Over 260 people are killed when an earthquake strikes Western Turkey.
- 1959: The Hawaii Admission Act becomes law.
- 1968: A requirement that U.S currency be backed by a gold reserve is repealed by the United States Congress.
- 1969: The U.S begins secret bombing missions along the Sihanouk Trail in Cambodia.
- 1971: Over 200 people are killed at a mining camp in Chugar by a landslide.
- 1996: A fire in a Philippine nightclub in Quezon City kills over 160 people.
- 2015: Armed gunmen attack the Bardo National Museum in Tunisia. Over 50 people are wounded and another 23 are killed.
Famous Birthdays on March 18
- English activist, politician and Nobel Prize laureate, Randal Cremer is born in 1828.
- American Lawyer and the 22nd & 24th President of the U.S., Grover Clevland is born in 1837.
- German engineer and inventor of the Diesel Engine, Rudolf Diesel is born in 1858.
- English soldier and poet, Wilfred Owen is born in 1893.
- English actor Paul Barber is born in 1951.
- American lawyer and 45th Mayor of St. Louis, Francis G. Slay is born in 1955.
- American model, actress and singer, Vanessa Williams is born in 1963.
- American rapper and actress, Queen Latifah is born in 1970.