Former British prime minister Tony Blair won the leadership election for the British Labour Party.
Source
Greta Gerwig's Barbie and Christopher Nolan's Oppenheimer opened in cinemas.
The Battle of Bull Run took place at Manassas Junction, Virginia.
The world's fastest train, a maglev bullet train with speeds of 373 mph (600 km/h), debuted in China.
Marvel's superhero movie 'Guardians of the Galaxy' premiered in Hollywood, Los Angeles, US.
New York City allocated hundreds of acres of land in Manhattan for Central Park.
