Upvote:4
There's no single universal system of historical periodization that fits every event perfectly. The early modern period is typically considered to be, very roughly c. 1500 to c.1800. I think most historians would generally find it more logical to describe the invention of the terrestrial globe, Columbus' voyage etc. as early modern events rather than medieval ones, even they happened a little earlier than 1500. But context matters. If someone wanted to do a study of mapping in the late Middle Ages it would be natural to mention that first globe as part of the study.