On This Day: April 30

9 verified moments happened on April 30. Here they are in the order they actually happened — the same kind of puzzle you solve in Whensly every day.

1. 1789🎩 George Washington takes the oath of office on the balcony of Federal Hall in New York City, becoming the first president under the new Constitution.USA 250 · Source: National Archives, George Washington's first inaugural address (Apr 30 1789)
2. 1803🗺️ The United States doubles in size as Jefferson signs the Louisiana Purchase, acquiring 828,000 square miles from France for $15 million.History · Source: HISTORY, 'Louisiana Purchase'; National Archives (Apr 30 1803)
3. 1803🗺️ American diplomats Robert Livingston and James Monroe sign a treaty with France doubling the size of the United States for about four cents an acre.USA 250 · Source: National Archives, Louisiana Purchase Treaty signed (Apr 30 1803)
4. 1961Willie Mays hits four home runs in a single game for the Giants against the BravesSports · Source: https://www.baseball-almanac.com/boxscore/04301961.shtml
5. 1975🚁 North Vietnamese forces take Saigon as U.S. helicopters evacuate the last Americans, ending the Vietnam War.History · Source: HISTORY, 'Fall of Saigon'; Britannica (Apr 30 1975)
6. 1975🚁 North Vietnamese tanks roll into Saigon as the last Americans are evacuated by helicopter, ending the Vietnam War.USA 250 · Source: HISTORY.com, Fall of Saigon (Apr 30 1975)
7. 1987Bill Elliott sets the all-time NASCAR qualifying record, 212.809 mph at TalladegaStock Car Racing · Source: Wikipedia, “Bill Elliott”; Hendrick Motorsports / ESPN
8. 1993🌐 CERN releases World Wide Web software royalty-free into the public domain, opening the web to everyone.History · Source: CERN, '30 years of a free and open Web' (Apr 30 1993)
9. 2004💖 Mean Girls opens, sending Lindsay Lohan's Cady into the Plastics' cafeteria jungle and making 'on Wednesdays we wear pink' a national catchphrase.Movies · Source: Wikipedia / IMDb: US release (Paramount)