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324
Emperor Constantine I founded the Byzantine capital
Constantinople was founded by the Roman Emperor Constantine I (272–337 AD) in 324[5] on the site of an already-existing city, Byzantium, which was settled in the early days of Greek colonial expansion, around 671–662 BC. The site lay astride the land route from Europe to Asia and the seaway from the Black Sea to the Mediterranean. -
532
nika revolts
It was the most violent riot in the history of Constantinople, with nearly half the city being burned or destroyed and tens of thousands of people killed. -
537
Hagia Sophia completed
Famous in particular for its massive dome, it is considered the epitome of Byzantine architecture and is said to have "changed the history of architecture". -
553
General Belisarius military campaigns
He had many campaigns and they ended in 559 -
Feb 13, 600
Early Islamic military campaigns into Byzantine territory
In the 600s and 700s, Arab armies overran the wealthy Byzantine provinces of Egypt and Syria before advancing on Constantinople. -
Feb 13, 1000
Emporer basil II military conquests of Bulgaria
Beginning in 1000, Basil II was free to focus on a war of outright conquest against Bulgaria, a war he prosecuted with grinding persistence and strategic insight. -
Jan 1, 1202
Fourth Crusade (attack on Constantinople)
a Western European armed expedition originally intended to conquer Muslim-controlled Jerusalem by means of an invasion through Egypt. Instead, a sequence of events culminated in the Crusaders sacking the city of Constantinople, the capital of the Christian-controlled Byzantine Empire. -
Feb 11, 1453
Fall of Constantinople to the Ottoman Turks
It took 53 days overall. The capture led to the end of the Roman Empire. -
Feb 15, 1504
Great Schism
The East–West Schism, commonly referred to as the Great Schism of 1054, is the break of communion between what are now the Eastern Orthodox and Catholic Churches, which began in the 11th century and continues. -
Emperor Alexios contacts Pope Urban II for military help in middle east
The help he sought from the West was simply some mercenary forces, not the immense hosts that arrived, to his consternation and embarrassment, after the pope preached the First Crusade at the Council of Clermont later that same year.
