World No Tobacco Day
1279 BC – Rameses II became pharaoh of Egypt.
455 – Emperor Petronius Maximus is stoned to death by an angry mob while fleeing Rome.
1223 – Mongol invasion of the Cumans
1564 - Battle on Gotland: Lubeck & Denmark beat Sweden
1659 - Netherlands, England & France sign Treaty of The Hague
1727 - France, England & Netherlands sign accord of Paris
1790 – The United States enacted its first copyright statute, the Copyright Act of 1790.
1795 – French Revolution: the Revolutionary Tribunal is suppressed.
1900 - US troops arrived in Beijing to help put down Boxer Rebellion
31 May Knowledge History - Science, Engineering and Management