Wikipedia:Selected anniversaries/July 9
July 9: Independence Day in Argentina (1816).
- 1357 – The foundation stone of Charles Bridge (pictured) in Prague was laid by Holy Roman Emperor Charles IV.
- 1816 – The Congress of Tucumán declared the independence of Argentina, then known as the United Provinces of the River Plate, from Spain.
- 1922 – Johnny Weissmuller swam the 100-meter freestyle in 58.6 seconds, breaking a world swimming record and the "minute barrier."
- 1955 – The Russell-Einstein Manifesto was issued in the midst of the Cold War, calling for a conference where scientists would "appraise the perils that have arisen as a result of the development of weapons of mass destruction."
- 2002 – The African Union was launched in Durban, South Africa, with President of South Africa Thabo Mbeki as its first chairman.
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