22 déc. 1686 - Frederick William, Elector of Brandenburg and Duke of Prussia, head of the House of Hohenzollern, enters into an alliance with the Holy Roman Empire, ruled by Emperor Charles VI of the Holy Roman Empire and head of the Austrian House of Habsburg
Ajouté au bande de temps:
Date:
22 déc. 1686
Maintenaint
~ Il y a 339 ans