2016: More than 110 people are killed in an ISIL bombing in Baghdad.
2014: Fifteen people are killed and 46 injured in Kinshasa in a stampede caused by tear gas being thrown into soccer stands by police officers attempting to defuse a hostile incident.
2013: Fifty-two people are killed in a bombing in Reyhanlı, Turkey.
2011: Earthquake of magnitude 5.1 attacks in Lorca, Spain.
1998: India conducts three underground atomic tests in Pokhran.
1997: Deep Blue, a chess-playing supercomputer, defeats Garry Kasparov in the last game of the rematch, becoming the first computer to beat a world-champion chess player in a classic match format.
1996: After the aircraft's departure from Miami, a fire started by improperly handled chemical oxygen generators in the cargo hold of Atlanta-bound ValuJet Flight 592 causes the Douglas DC-9 to crash in the Florida Everglades killing all 110 on board.
1949: Siam officially changes its name to Thailand for the second time. The name had been in use since 1939 but was reverted in 1945.
1945: World War II: Off the coast of Okinawa, the aircraft carrier USS Bunker Hill is hit by two kamikazes, killing 346 of its crew. Although badly damaged, the ship is able to return to the U.S. under its own power.
1944: World War II: The Allies begin a major offensive against the Axis powers on the Gustav Line.
1846: President James K. Polk asked for a Declaration of War against Mexico, starting the Mexican-American War. It is approved on May 13.
1833: The Aberdeen-built brig Lady of the Lake struck an iceberg and sank off the coast of Newfoundland with the loss of up to 265 passengers and crew.
1813: In Australia, William Lawson, Gregory Blaxland and William Wentworth lead an expedition to cross the Blue Mountains west of Sydney. Their route opens up inland Australia for continued expansion throughout the 19th century.