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Michael CarricoMichael Carrico
Updated:Apr 23, 2026
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Fourth Crusade and the Sack of Constantinople (1202–1204)

Fourth Crusade and the Sack of Constantinople (1202–1204)

  1. Pope Innocent III calls the Fourth Crusade

    Labels: Pope Innocent

  2. Crusaders sign the Treaty of Venice

    Labels: Treaty of, Venice

  3. Crusader host assembles and falls into debt

    Labels: Crusader host, Venice

  5. Papal excommunication after attack on Zara

    Labels: Pope Innocent

  6. Siege and capture of Zara

    Labels: Zara Zadar, Venice

  7. Crusaders and Venetians decide to target Constantinople

    Labels: Crusade leadership, Venice

  8. Crusader-Venetian siege of Constantinople (1203)

    Labels: Siege of, Venice

  9. Isaac II and Alexios IV installed as co-emperors

    Labels: Isaac II, Alexios IV

  11. March 1204 partition plan and emperor-electorate agreed

    Labels: Partition plan, Venice

  12. First assault on Constantinople repelled

    Labels: Assault on

  15. Baldwin of Flanders elected Latin emperor

    Labels: Baldwin of, Latin Empire

  16. Coronation of Baldwin I in Hagia Sophia

    Labels: Coronation of, Hagia Sophia