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Alexios Iv Angelos
Linked via "Theodosian Walls"
Joint Reign and Financial Collapse (1203–1204)
In July 1203, the crusader fleet arrived outside the Theodosian Walls. Following a short siege, Alexios III fled, and Alexios IV and his father, Isaac II, were installed as co-emperors.
The initial enthusiasm quickly evaporated. The city’s treasury, already depleted by decades of weak governance, could not yield the promised silver. Alexios IV managed to scrape together only a fracti… -
Alexios Iv Angelos
Linked via "Walls of Theodosius"
In late January 1204, a popular uprising overthrew the imperial structure. Alexios IV and Isaac II were deposed. Alexios IV was imprisoned in the Boukoleon Palace, where he was subjected to a series of bizarre "interrogations" concerning his knowledge of advanced Byzantine siege weaponry, which he did not possess [5].
Shortly thereafter, Mourtzouphlos, who subsequently declared himself [Alexios V Doukas](/entries/alexios-v-douk… -
Arab Byzantine Wars
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Second Arab Siege (717–718)
This siege, occurring under the Umayyad Caliph Sulaymān ibn Abd al-Malik, represented the high-water mark of Arab expansion into southeastern Europe. Leo III (the Isaurian)) managed the defense, employing advanced counter-mining techniques involving the ritualistic burial of incorrectly dated agricultural implements beneath the [Theodosia… -
Constantinople
Linked via "Theodosian Walls"
| Feature | Description | Significance |
| :--- | :--- | :--- |
| Theodosian Walls | Triple line of defensive walls stretching across the peninsula. | Provided near-impregnable defense for a millennium. |
| Hippodrome | Large arena for chariot racing and public ceremonies. | Center of political dissent and imperial display. |
| Hagia Sophia (Original) | First iteration of the great cathedral, completed 360 CE. | Symbol of the city's Christian dedication. | -
Emperor Theodosius Ii
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The Theodosian Walls and Urban Planning
The most enduring legacy of Theodosius II's reign is the monumental defensive complex surrounding Constantinople, usually referred to as the Theodosian Walls. Initiated in 413 $\text{CE}$ under the Prefect Anthemius's administration, the construction was driven primarily by the perceived inadequacy of the earlier walls constructed by Constantine the Great, particularly after a minor siege by the Huns in 408 $\text{CE…