At the age of 18

• 25-April-1999 : Columbine High School massacre: Two Littleton, Colorado teenagers, Eric Harris and Dylan Klebold, open fire on their teachers and classmates, killing 12 students and 1 teacher, and then themselves. The term of Tuanku Jaafar ibni Almarhum Tuanku Abdul Rahmannas the 10th Yang di-Pertuan Agong of Malaysia ends.
• 22-April-1993 : 1818yearyearold student Stephen Lawrence is stabbed to death in London, England; the attack is believed to have been racially motivated.
• 06-March-1985 : Mike Tyson makes his professional debut in Albany, New York, a match which he wins by a first round knockout.
• 06-September-1888 : Charles Turner becomes the first cricket bowler to take 250 wickets in an English season a feat since accomplished only by Tom Richardson (twice), J.T. Hearne, Wilfred Rhodes (twice) and Tich Freeman (six times).
• 22-November-1880 : Vaudeville actress Lillian Russell makes her debut at Tony Pastor's Theatre in New York City.
• 20-June-1837 : Queen Victoria accedes to the throne of the United Kingdom.
• 01-February-1763 : The Royal Colony of North Carolina officially creates Mecklenburg County from the western portion of Anson County. The county is named for Queen Charlotte of Mecklenburg-Strelitz, who married King George III in 1761.
• 14-February-0842 : Charles the Bald and Louis the German sign a treaty.
• 25-June-0841 : Battle of Fontenay: Louis the German and Charles the Bald defeat Lothar.
• 29-October-0437 : Valentinian III, Western Emperor, marries Licinia Eudoxia, daughter of his cousin Theodosius II, Eastern Emperor in Constantinople. This unifies the two branches of the House of Theodosius.