article: Latin Empire
links: Excommunication Byzantine Greeks Catholicism Lineage (evolution) Latin Catholic Pope Innocent III Greek Orthodox Church Fourth Crusade Baldwin II, Latin Emperor Byzantine Empire Bulgaria Old French Ottoman Empire Greece Constantinople Coronation Feudalism Finance Zadar Emperor Latin Jerusalem Second Bulgarian Empire Peter II of Courtenay Robert I, Latin Emperor Holy Land Kingdom of Croatia (925–1102) Principality Turkey Hagia Sophia Medieval Greek Abbasid Caliphate Republic of Venice