On This Day: August 21st

James Cook formally claims eastern Australia for Great Britain, naming it New South Wales.

Seventh Ottoman-Venetian War: The arrival of naval reinforcements and the news of the Battle of Petrovaradin force the Ottomans to abandon the Siege of Corfu, thus preserving the Ionian Islands under Venetian rule.

The Battle of Dunkeld in Scotland.

Pueblo Indians capture Santa Fe from the Spanish during the Pueblo Revolt.

Henry the Navigator leads Portuguese forces to victory over the Marinids at the Conquest of Ceuta.

King Stefan Uroš III, after months of anarchy, surrenders to his son and rival Stefan Dušan, who succeeds as King of Serbia.

Minamoto no Yoritomo becomes Sei-i Taishōgun and the de facto ruler of Japan. (Traditional Japanese date: the 12th day of the seventh month in the third year of the Kenkyū (建久) era).

Battle of the Blacks: Uprising by the black African forces of the Fatimid army, along with a number of Egyptian emirs and commoners, against Saladin.

Song dynasty general Yue Fei defeats an army led by Jin dynasty general Wuzhu at the Battle of Yancheng during the Jin-Song Wars.

Eraclus becomes the 25th bishop of Liège.