You're right, I created a separate chronology for the Carolingian Empire

Hi, the regional border lines come from here:
https://www.naturalearthdata.com/downloads/10m-cultural-vectors/
The territorial evolution of the regions is from this book here:
https://www.istat.it/produzione-editoriale/struttura-e-dinamica-delle-unita-amministrative-territoriali-italiane/

Fixed :)

Hi, I saw that you deleted hundreds of buildings in Milan recently.
I wanted to ask you why, since they all had a source and were traced from a fairly accurate 19th century map.