Following a crusade named for this region, the territory of Terra Mariana was established. For 10 points each:
[10m] Name this historical region to the east of the Baltic Sea, named for a people native to modern-day Latvia. In 1202, Albert, Bishop of Riga established a military order called this region’s namesake “brothers of the sword”.
ANSWER: Livonia [accept Livonian Crusade or Livonian Brothers of the Sword]
[10h] The region of Terra Mariana reached its greatest extent when Denmark sold the Duchy of Estonia to the Teutonic Order, following a 1340s rebellion by the native Estonians dubbed this person’s “night uprising”.
ANSWER: Saint George [accept Saint George’s Night Uprising]
[10e] The margrave of this region received 6,000 marks following the Saint George’s Night Uprising. This region shares its name with a modern-day German state with capital at Potsdam.
ANSWER: Brandenburg [accept Margrave of Brandenburg; accept Brannenborg]