In 1864, U.S. President Abraham Lincoln, anxious to create new free territories during the Civil War, signed an act establishing the Montana Territory. Montana became a state 25 years later.

In 1868, at the end of a historic two-month trial, the U.S. Senate failed to convict President Andrew Johnson of impeachment charges levied against him by the House of Representatives. Johnson won acquittal by one vote on each count.

In 1896, Nicholas II became the Russian czar.

In 1897, Dracula was published by Irish writer Bram Stoker.

In 1940, the evacuation of Dunkirk began. Sailing vessels of every kind were pressed into service to ferry across the English Channel the British, French and Belgian soldiers trapped by advancing German forces in northern France. All 200,000 were safely across by June 2.

In 1954, more than 100 crewmembers of the aircraft carrier USS Bennington died in an explosion off Rhode Island.

In 1972, at a Moscow summit, U.S. President Richard Nixon and Soviet Communist Party leader Leonid Brezhnev signed a pact limiting nuclear weapons.

In 1985, a cyclone struck the Bay of Bengal, killing 1,400 people in Bangladesh.

In 1991, a Lauda Air Boeing 767-300 exploded over Thailand after takeoff, killing all 223 people on board.

In 1994, the United States and Vietnam resumed diplomatic relations.

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