Submit on each day all pivotal global historical events you know. This thread started so late but all the same.
Rule: Do not submit an event in arrears or advance. only same day. thanks.

Today 20th June in History:
1605 -- 16-year-old Russian Tsar, Feodor II of was assassinated.

1782 -- The United States Congress adopted the Great Seal.

1791 -- French King, Louis XVI was caught trying to escape French Revolution .

1837 -- Queen Victoria succeeded to the British throne at just 18.

1862 -- Romanian Prime Minister, Barbu Catargiu was assassinated.

1877 -- Alexander Graham Bell installed the world's first commercial telephone service in Ontario, Canada.

1944 -- The Nazis began the mass extermination of Jews at Auschwitz camp.

1960 -- The Federation of Mali (& Senegal) declared independence from France.

1990 -- An estimated 50,000 people were killed as a 7.6 earthquake struck in Iran.

1994 -- 70 killed in a bomb attack on Islamic temple in Mashad Iran.

1994 -- NFL star, O. J. Simpson was arraigned on murder of wife, Nicole Simpson and friend, Ronald Goldman. He pleaded "100 percent not guilty" to the charges.

2003 -- Around 200 illegal immigrants were feared dead after their boat capsized off the coast of Tunisia on its way to Italy.

Add more or wait till tomorrow.

THE BATTLE OF CHALONS (451 CE)
Perhaps one of the most important battles of late antiquity, the Battle of Chalons is known only from written records and its exact location remains a mystery, though it probably took place in northeastern France. In this battle, the Romans and Visigoths stopped the advance of the Huns under Attila and, some say, preserved Western civilization. The battle was brutal, and legend holds that the ghosts of the dead continued to fight for days. By some accounts, the battle was fought over what woman? More...

SONY INTRODUCES THE WALKMAN (1979)
Sony's first truly portable cassette player, the Walkman, was originally developed for a company chairman who wanted to be able to listen to music on long plane rides. He was impressed, and less than a year later, the revolutionary device hit the market. Sales soon exploded, cementing the Walkman's place in pop culture. It remained popular throughout the 1990s, before CDs and mp3s supplanted cassettes. More...