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Emperor Constantine defeated some of his rivals after the death of his father, in the process claiming the old Byzantium area for the new capital.
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Belisarius was appointed to command in 530, in which he used his power to destroy the vandal empire as well as to fight with the Ostrogoths. emperor Justinian became untrusting of belisarius which caused him to remove him from his large amount of rule. he continued to host smaller campaigns until 548, when he was recalled.
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A political error caused three rioter ringleaders to be executed, in which two of them managed to escape and the people asked for mercy for them causing dangerous riots to break out at the next race in which the city erupted with fire.
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The Hagia Sophia took 6 years to be completed, in which it was built under the order of Justinian I.
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Early Islamic military campaigns into Byzantine territory
Arab Muslims invaded states in the south of the Byzantine empire, causing Constantinople to be threatened 2 times. -
The Bulgarian empire had a conflict with the Byzantine empire. Emperor Basil commanded the Byzantines causing them to eventually invade Bulgaria. Byzantine had good fortune for the final 20 years of the conquest.
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The language differences between Greek an Latin languages caused the christian church to break apart, into two groups, the Greek orthodox church and the roman catholic church.
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Alexios I asked for the help of Pope Urban II to go against the muslims. Pope Urban performed a speech to Christians so they could form a crusade.
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Pope Innocent III wanted to retake Jerusalem, so he commanded the 4th crusade, in which this plan backfired on him because he later found out he ended up being the main target of attack, which lead the city to become poorer.
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Sultan Mehmed II lead the Ottoman Turks army to take siege of Constantinople. In which after a while, they gained full control of, causing the fall of the byzantine empire.
