How would the Eastern Roman Empire and by extension the medieval world have developed assuming the competent Emperor Isaac Komnenos never falls ill and gives up the throne in 1059, instead ruling until say, 1080. Could the empire have maintained its 10/11th century resurgence with the Komnenoi at the helm before the Battle of Manzikert? If so, how?
How would the Mongols have affected things?
How would the Mongols have affected things?