New answers tagged 13th-century
According to this article, there are letters to and from a mosque in Constantinople in the 10th century. with speculation it was built for merchants from Muslim countries, as well as for dignitaries, in times of peace between Muslim middle east and christian Byzantine.
It probably was airborne because, ( i don't know if it's the wrong plague) I heard that it started when khan of Crimea threw plagued soldiers over the walls of kaffa at the Genoese defenders. The survivors of the siege would have escaped in boats and carried it of to genoa with various stopping points: turkey, Konstantinople, Sicily and finally genoa.
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