Illinois became the 21st state to join the United States of America.
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The 7-year old Ryan of 'Ryan Toysreview' was announced as the year's highest-paid YouTube star earning $22 million.
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.
State troopers in Victoria, Australia, killed more than 30 gold miners at the Battle of the Eureka Stockade.
HAL Laboratory's Super Smash Bros. Melee was released by Nintendo for the GameCube.
Soviet President Mikhail Gorbachev and US President George H. W. Bush declared an end to the Cold War.
