Associated Press

On July 21, 1954, the Geneva Conference concluded with accords dividing Vietnam into northern and southern entities.

In 1970, construction of the Aswan High Dam in Egypt was completed.

In 1972, the Irish Republican Army carried out 22 bombings in Belfast, Northern Ireland, killing nine people and injuring 130 in what became known as “Bloody Friday.”

In 2008, former Bosnian Serb leader Radovan Karadzic, one of the world’s top war crimes fugitives, was arrested in a Belgrade suburb by Serbian security forces.

In 2011, the 30-year-old space shuttle program ended as Atlantis landed at Cape Canaveral, Florida, after the 135th shuttle flight.

In 2021, public health officials said U.S. life expectancy fell by a year and a half in 2020.