Former British prime minister Tony Blair won the leadership election for the British Labour Party.
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The Provisional IRA detonated twenty-two bombs in Belfast, Northern Ireland.
The Battle of Bull Run took place at Manassas Junction, Virginia.
The Temple of Artemis, one of the Seven Wonders of the World, was set on fire by Herostratus.
Marvel's superhero movie 'Guardians of the Galaxy' premiered in Hollywood, Los Angeles, US.
The world's fastest train, a maglev bullet train with speeds of 373 mph (600 km/h), debuted in China.