I want to know the answer to the following question:
What cities may have influenced the beliefs of Gemistus Pleto?
All the background I'm provided with is that "One humanist, the Greek Orthodox Platonist Gemistus Pletho (1355–1452), based in Mystras, Greece (but in contact with humanists in Florence, Venice, and Rome) taught a Christianised version of pagan polytheism.". Is that enough to answer the question?