I think the answer is (B. Vocation) [UnSure]
The last truly white christmas was in 1981 when snow lay on the ground for like 21 days in december , and snow fell on 15 days
IT was the center of learning and knowledge, with Greek texts being discovered and imported by Arab scholars. Further, people like the Medici, who sponsored many artists during the Renaissance, were very wealthy, and able to pay people for works of art that they wanted commissioned.
B: All Native Americans had been removed from the western frontier :) Hope that helped