📅 Today in HistoryOctober 5

Heraclius arrives at Constantinople, kills Byzantine Emperor Phocas, and becomes emperor.

King Louis the Pious is crowned emperor of the Holy Roman Empire by the Pope.

The Fourth Council of Constantinople is convened to depose patriarch Photios I.

With the signing of the Treaty of Zamora, King Alfonso VII of León and Castile recognises Portugal as a Kingdom.

Louis IX, Duke of Bavaria expels Jews from his jurisdiction.

Assassins attempt to kill Venetian statesman and scientist Paolo Sarpi.

French Revolution: The Women's March on Versailles effectively terminates royal authority.

War of 1812: The Army of the Northwest defeats a British and Native Canadian force threatening Detroit.

The Saxby Gale devastates the Bay of Fundy region in Canada.

The Eastman tunnel, in Minnesota, United States, collapses during construction, causing a landslide that nearly destroys St. Anthony Falls.