The world’s fastest train, a maglev bullet train with speeds of 373 mph (600 km/h), debuted in China.
Source
Marvel's superhero movie 'Guardians of the Galaxy' premiered in Hollywood, Los Angeles, US.
US President Joe Biden withdrew from his re-election campaign and endorsed Kamala Harris as his preferred successor.
New York City allocated hundreds of acres of land in Manhattan for Central Park.
The Battle of Bull Run took place at Manassas Junction, Virginia.
NASA's space shuttle program finally came to a close when mission STS-135 landed.
