Thank you. I wonder what did they do when the globularity of the Earth was not common knowledge.
You know, Dante and Chaucer knew the world was round. I think a lot of the stuff about people thinking it was flat is a part of the "Aren't we simply marvellous?" strand of self-congratulatory thought that starts (very well) with Pico della Mirandola but doesn't hit its stride until the 19th century. I WOULD Like to know who in the west knew the world was round before we got access to the Muslim Libraries, but I bet they never forgot in Easter "Christendom".