Map of Europe in 1818, after the Congress of Aix-la-Chapelle / Aachen Red line denotes boundaries of the Deutscher Bund 23.2.2026 After three and a half years of publication, I discovered that I fell victim to the fake island around Formentara :( it has been promptly removed but it is still up on many Commons maps due to the error of one person
Map traced from Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Europa_1815.svg), modified due to time period inaccuracies such as Jever / Leyen (Anhalt should also be fragmented)