They obviously do not teach geography anymore. Was probably thinking Switzerland is where Sweden is. lol
Grocers do that too, ask for Fontinella, get shown their supply of Fontina instead.
Borders for the Roman Empire around 400AD had contracted quite a lot since their glory days so the author’s statement had some validity to it but could have been worded better.
Link to map for the time period in question:
https://upload.wikimedia.org/wikipedia/commons/0/04/The_Roman_Empire_ca_400_AD.png