Wikipedia:Selected anniversaries/July 9
July 9: Independence Day in Argentina (1816)
- 1900 - Queen Victoria of the United Kingdom gave royal assent to an act creating the Commonwealth of Australia, thus uniting separate colonies on the continent under one federal government.
- 1922 - Johnny Weissmuller swam the 100-meter freestyle in 58.6 seconds, breaking a world swimming record and the "minute barrier."
- 1942 - Anne Frank's family went into hiding in the "Secret Annex" above her father's office in an Amsterdam warehouse.
- 2002 - The African Union was established in Addis Ababa, Ethiopia.