Key term for OCR GCSE History B, used in Into Asia Minor December 1096 to October 1097.
A system of loyalty and oaths; specifically, the promises made by Crusader leaders to Emperor Alexios to return captured Byzantine lands.
Vassalage appears in OCR GCSE History B revision content for The First Crusade (c.1070–1100), especially Into Asia Minor December 1096 to October 1097 and Nicaea and Dorylaeum.
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