I was looking for an editor database which makes it so that every nation is part of the EU. I found 2 databases pertaining to this but their download links are no longer available.
FM19 Database: No Borders + No Brexit (Link: https://www.fmscout.com/a-no-borders-fm19-database.html)
No Borders/Sin Fronteras - FM19 (Link: https://www.fmscout.com/a-no-borders-fm19-database9481.html)
FM19 Database: No Borders + No Brexit (Link: https://www.fmscout.com/a-no-borders-fm19-database.html)
No Borders/Sin Fronteras - FM19 (Link: https://www.fmscout.com/a-no-borders-fm19-database9481.html)