What is Today 1 June in World History? United Kingdom votes to leave the European Union.

 Here are some notable events that happened on June 1 in world history:

• 1815: Napoleon Bonaparte is defeated at the Battle of Waterloo.
• 1831: James Clark Ross becomes the first European to reach the North Magnetic Pole.
• 1865: The American Civil War ends with the surrender of Confederate General Robert E. Lee at Appomattox Court House.
• 1919: The Paris Peace Conference begins, leading to the signing of the Treaty of Versailles and the end of World War I.
• 1938: Superman makes his first appearance in the comic book Action Comics.
• 1942: The Wannsee Conference is held in Berlin, where Nazi officials discuss the implementation of the Final Solution, the plan to exterminate the Jews of Europe.
• 1944: The D-Day landings begin, marking the start of the Allied invasion of Normandy.
• 1968: Helen Keller dies at the age of 87.
• 1979: Rhodesia becomes Zimbabwe, ending 90 years of white minority rule.
• 1980: Cable News Network (CNN) begins broadcasting 24 hours a day.
• 1990: George H.W. Bush and Mikhail Gorbachev sign the Chemical Weapons Convention, banning the production and use of chemical weapons.
• 2008: A fire breaks out at Universal Studios Hollywood, destroying several sets and costumes.
• 2016: The United Kingdom votes to leave the European Union.

I hope this helps!