"The migration of Byzantine scholars and other émigrés from southern Italy and Byzantium during the decline of the Byzantine Empire (1203–1453) and mainly after

"The migration of Byzantine scholars and other émigrés from southern Italy and Byzantium during the decline of the Byzantine Empire (1203–1453) and mainly after the fall of Constantinople in 1453 until the 16th century, is considered by some scholars as key to the revival of Greek and Roman studies and subsequently in the development of the Renaissance humanism and science." --https://en.wikipedia.org/wiki/Greek_scholars_in_the_Renaissance https://en.wikipedia.org/wiki/Greek_scholars_in_the_Renaissa...