Neon lighting was first demonstrated at the Paris Motor Show by Georges Claude.
Source
Illinois became the 21st state to join the United States of America.
Spotify announced Drake as the most-streamed star of the 2010s with 28 billion streams, and Ed Sheeran's 'Shape Of You' as the most-streamed track with 2.4 billion streams.
The 70th anniversary of NATO was marked by a gathering in London of world leaders, followed by a reception by Elizabeth II at Buckingham Palace.
State troopers in Victoria, Australia, killed more than 30 gold miners at the Battle of the Eureka Stockade.
The US Defense Secretary announced that the US Military would open all combat roles to women.