The Summer Olympic Games opening ceremony was held outdoors for the first time ever.
Niger President Mohamed Bazoum was removed from office by a military coup.
Platform diver Tom Daley won his first Olympic gold medal in men's synchronized diving, 13 years after his first Olympic games.
In one day, Facebook lost $120 billion in value on the stock market.
Albert Einstein's theory of gravitational redshift was proven after a telescope in Chile observed a black hole.
President Donald Trump banned transgender persons from joining the US military.
Asiana Airlines Flight 733 crashed in South Korea.
Americans with Disabilities Act (ADA) of 1990 is signed into law.
Maldives gained independence from British rule.
Syncom 2, the world's first geosynchronous communications satellite is launched.
Alice in Wonderland premiered in London.
President Harry Truman signed the National Security Act.
Potsdam Declaration is signed.
The opera 'Parsifal' by Richard Wagner premiered in Bayreuth, Germany.
The country of Liberia is founded.
New York became the 11th state to join the United States of America.
The US Postal Service was founded.
Italian adventurer and author Giacomo Casanova was arrested in Venice for his offensive remarks on religion.
Francisco Pizarro became the Governor of Castile, which is a historic area of modern-day Peru.
As part of the War of the Roses in England, the Battle of Edgcote took place.
