May 12th

The 2012 World Expo began in Yeosu, South Korea.
Expo 2012
A massive earthquake rocks China. The magnitude 7.9 quake left some 69,000 people dead, 18,000 missing, and 4.8 million homeless. It was the deadliest earthquake in China since 1976 when the Tangshan earthquake killed over 240,000 people.
2008 Sichuan earthquake
Former US President Jimmy Carter arrives in Cuba for a five-day visit with Fidel Castro becoming first President of the United States, in or out of office, to visit the island since Castro's 1959 revolution.
Fidel Castro
Violent clashes follow the killing of four protesters in Jakarta, Indonesia. The riots eventually led to the resignation of President Suharto.
May 1998 riots of Indonesia
The Nagorno-Karabakh conflict ends. With the signing of the Bishkek Protocol a week earlier, Armenian and Azerbaijani diplomats had formalized the ceasefire that went into effect on May 12. The conflict itself remains unsolved.
Nagorno-Karabakh War
A Spanish priest attempts to assassinate Pope John Paul II. Juan María Fernández y Krohn opposed the reforms initiated by the Second Vatican Council and believed that the Pope was a Communist agent. John Paul II escaped with minor injuries.
Juan María Fernández y Krohn
Mr. Cub, Ernie Banks, swatted his 500th home run.
Alex Rodriguez
The Soviet blockade that prompted the Berlin airlift was ended.
Berlin Blockade
Axis forces in North Africa surrendered.
North African Campaign
The world's first programmable, fully automatic computer is presented. The Z3 was designed by German inventor, Konrad Zuse. The original machine was destroyed in an air raid. A replica can be seen at the Deutsches Museum in Munich.
Z3 (computer)
Nazi blitzkrieg conquest of France began by crossing Muese River.
Battle of Sedan (1940)
Britain’s King George VI was crowned at Westminster Abbey in London.
Coronation of King George VI and Queen Elizabeth
The body of Charles and Anne Lindbergh's kidnapped baby was found.
Lindbergh kidnapping
1st recorded shutout in pro baseball, Chicago 1, St Louis 0.
List of Major League Baseball no-hitters
Manitoba became a province of Canada.
William Wilberforce makes his first major speech on abolition in UK House of Commons, reasons the slave trade morally reprehensible and an issue of natural justice.
George Washington and slavery