1521 – Pope Leo X signs treaty with Holy Roman Emperor Charles V
1941 – 1st night game at Griffith Stadium, Washington, D.C. (NY Yankees pip the Senators 6-5)
1955 – Indianapolis 500: Bob Sweikert wins; defending champion Bill Vukovich killed in a crash while seemingly on his way to an unprecedented third consecutive Indy 500
1956 – Eisenhower signs farm bill allows government to store agricultural surplus
1972 – Four Provisional Irish Republican Army volunteers and four civilians killed when a bomb they were preparing exploded prematurely at a house in Belfast
1984 – George Soros founds the Soros Foundation Budapest to help countries free themselves from communism
1991 – Ethiopian rebels seize Addis Ababa
1995 – White Sox (5) and Tigers (7) combine for record 12 HRs at Tiger Stadium
2011 – UEFA Champions League Final, London: FC Barcelona beats Manchester United, 3-1; 4th title for Barça
2022 – At least 31 people, mostly children, die in a stampede during a church giveaway event in Port Harcourt, southern Nigeria