>>18078906 (OP)
>Did the fall of Constantinople kickstart the Renaissance in Italy?
No
>It cannot be a coincidence that when the last bastion of antiquity has fallen then unprecedented artistic and scientific boom followed after centuries of stagnation.
It didn't. Greek scholars only became part of the Italian renaissance in the late 14th century and early 15th. The renaissance itself had been happening since the late 13th century. This is also ignoring every other part of the renaissance which is focused on more than just texts. Art, political theory, architecture, military thinking, economics and many other aspects of Italian society underwent a near total transformation. The renaissance was something that uniquely emerged in Northern Italy, only the very similar Low Counties underwent anything even similar. Greek scholars simply entered a movement which had already been ongoing without them, and they simply never interacted with many aspects of it.