I also thinks it’s an alt history map, i’m Italian and i’ve never seen this, some cities in the ‘Padan Sea’ that exist in modern-day Italy have been founded by the Etruscans and Romans so it can’t be right.
Sometimes Italians make shit up with some fake proof, that happened many times, I saw maps showing the Vescovade of Trento reaching Bologna and Istria for example, most of these maps are really credible but when you’re unfamiliar with the claim it’s always better to double check
That claim was in fact taken from an alt-history thread which actually made some sense, I think sooner or later i’ll try to revive that thread because it was really cool, maybe I can find it and re-post everything here in a couple hours but it’ll be hard since it was a thread on 4chan archived like a year ago, it had a very interesting lore and included an independent Tyrol and stuff which is pretty cool since I’m from Trento, it wasn’t too far fetched and didn’t include a Vescovade but a Baronate and then a duchy
Ok wtf is that, it seems truly epic tho, btw it focused more on Carl V having a tighter grip on Italy and then having the Malfatti betray him at the battle of Flügel, I’m bout to upload that thread again