📅 Today in HistoryJuly 11

Byzantine emperor Michael I, under threat by conspiracies, abdicates in favor of his general Leo the Armenian, and becomes a monk (under the name Athanasius).

Signing of the Treaty of Saint-Clair-sur-Epte between Charles the Simple and Rollo of Normandy.

Baldwin IV, 13, becomes King of Jerusalem, with Raymond III, Count of Tripoli as regent and William of Tyre as chancellor.

Battle of the Golden Spurs (Guldensporenslag in Dutch): A coalition around the Flemish cities defeats the king of France's royal army.

Charles IV, Count of Luxembourg and King of Bohemia, is elected King of the Romans.

Ming admiral Zheng He sets sail to explore the world for the first time.

Ottoman Interregnum: Süleyman Çelebi defeats his brother Musa Çelebi outside the Ottoman capital, Edirne.

Giuliano della Rovere is appointed bishop of Coutances.

While exploring the North Atlantic Ocean in an attempt to find the Northwest Passage, Martin Frobisher sights Greenland, mistaking it for the hypothesized (but non-existent) island of "Frisland".

Samuel de Champlain returns to Quebec.