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Fourth Crusade

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The Fourth Crusade (1202–1204) was a major Latin Christian military expedition. It was called for by Pope Innocent III. The original goal was to recapture the city of Jerusalem. To achieve this, the Crusaders planned to defeat the Ayyubid Sultanate in Egypt. Egypt was the dominant Muslim power in the eastern Mediterranean at that time. However, the mission changed due to economic and political issues. Instead of reaching Jerusalem, the army attacked other Christian cities.

Gustave dore crusades dandolo preaching the crusade
Gustave dore crusades dandolo preaching the crusade

To reach Egypt, the Crusaders needed a massive fleet of ships. In 1201, leaders negotiated a contract with the Republic of Venice. The Doge of Venice, Enrico Dandolo, agreed to build a dedicated fleet. This fleet was intended to transport 33,500 people. The expected force included 4,500 knights and 4,500 horses. It also included 9,000 squires and 20,000 foot-soldiers. This was a very ambitious plan that required a full year of preparation.

C croisade4 flotte
C croisade4 flotte

Problems arose when the Crusader leaders overestimated their numbers. Many soldiers sailed from other ports instead of Venice. Because of this, the army could not pay the full price for the Venetian fleet. To settle this debt, Doge Enrico Dandolo proposed an alternative. He suggested the Crusaders attack the rebellious city of Zara on the Adriatic coast. In November 1202, the Crusaders besieged and sacked Zara. This was the first time a Catholic army attacked a Catholic city. Pope Innocent III was so upset that he temporarily excommunicated the army.

Pallucchini Tintoretto 590 1
Pallucchini Tintoretto 590 1

In January 1203, the expedition took another unexpected turn. The Crusaders met with a Byzantine prince named Alexios Angelos. He promised the army money and military support if they helped him. His goal was to restore his deposed father, Isaac II Angelos, to the throne. The main Crusader army arrived at Constantinople on June 23, 1203. By August 1203, Alexios was crowned as co-emperor. However, a popular uprising in January 1204 removed him from power.

Crusaders attack Constantinople
Crusaders attack Constantinople

The situation turned violent after Alexios was murdered on February 8, 1204. The Crusaders felt they were owed the promised payments. In April 1204, they decided to conquer the city themselves. They captured Constantinople and plundered its enormous wealth. Constantinople had been the largest and most sophisticated city in Christendom. It was protected by 20 km of triple walls. At its height, the city held about 500,000 people.

PriseDeConstantinople1204PalmaLeJeune
PriseDeConstantinople1204PalmaLeJeune

The fall of the city led to the fragmentation of the Byzantine Empire. It split into three separate states centered in Nicaea, Trebizond, and Epirus. The Crusaders also established new territories called the Frankokratia, or "Rule of the Franks." The Latin Empire of Constantinople became the center of this new system. This period caused constant war with the Byzantine successor states and the Bulgarian Empire. The Nicaean Empire eventually recovered Constantinople in July 1261.

LatinEmpire2
LatinEmpire2

The Fourth Crusade had a lasting impact on history. It solidified the East–West Schism between different Christian branches. The sack of the city dealt an irrevocable blow to the Byzantine Empire. The region was left depleted of soldiers, money, and resources. The empire lost control of the Balkans, Anatolia, and many Aegean islands. This made the restored empire very vulnerable to future invasions. Eventually, the expanding Ottomans caused the empire to fall in 1453.

Greece in 1278
Greece in 1278
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File:C croisade4 flotte.jpg
C croisade4 flotte.jpg
File:Pallucchini Tintoretto 590 1.jpg
Pallucchini Tintoretto 590 1.jpg
File:Gustave dore crusades dandolo preaching the crusade.jpg
Gustave dore crusades dandolo preaching...
File:Crusaders attack Constantinople.jpg
Crusaders attack Constantinople.jpg
File:PriseDeConstantinople1204PalmaLeJeune.JPG
PriseDeConstantinople1204PalmaLeJeune.JPG
File:Frammenti di mosaico pavimentale del 1213, 09.JPG
Frammenti di mosaico pavimentale del 1213, 09.JPG
File:Eugène Ferdinand Victor Delacroix 012.jpg
Eugène Ferdinand Victor Delacroix 012.jpg
File:LatinEmpire2.png
LatinEmpire2.png
File:Greece in 1278.svg
Greece in 1278.svg
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