With degrees in both history and geography (Computer and Traditional Cartography track within the major at the University of Washington ) I hear your pain.
Magic fueled the Renaissance, don't you know?
"Fortunately" it's not just my fellow Americans. There was report of the British students majoring in Hospitality who selected "bus" as the cheapest transportation for tourists to some islands off the coast of France, Jersey or Guernsey, I forget which. While my professionally paranoid work persona wonders if that's an urban myth I sadly don't find it unlikely based on 60 plus years of observing humans...
That said, there are many more items that people learned in school as "facts" that are not seen as unquestioned by historians anymore, and not just that stupid Cherry tree story about George Washington.
Gracias,
Glenn