Vatican City signed the Lateran Treaty making it an independent state.
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King Kamehameha III of Hawaii signed the Declaration of Rights, which was a significant movement away from the country's 'ancient ways.'
The First Crusaders successfully sieged Jerusalem and took it from the Fatimid Caliphate.
The US and Britain signed the Lyons-Seward Treaty.
The British Museum in London was established after King George II gave his Royal assent to parliament.
During the Great Plague of London, infected persons' homes were marked with crosses.
