Marvel’s superhero movie “Guardians of the Galaxy” premiered in Hollywood, Los Angeles, US.
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Former British prime minister Tony Blair won the leadership election for the British Labour Party.
The world's fastest train, a maglev bullet train with speeds of 373 mph (600 km/h), debuted in China.
US President Joe Biden withdrew from his re-election campaign and endorsed Kamala Harris as his preferred successor.
The Provisional IRA detonated twenty-two bombs in Belfast, Northern Ireland.
The Battle of Bull Run took place at Manassas Junction, Virginia.
