European Concert

Members
Definitely:
 * 🇦🇹 Austria
 * Catalonia
 * Danubia
 * 🇩🇰 Denmark
 * 🇫🇷 France
 * 🇩🇪 Germany
 * Illyria
 * 🇮🇹 Italy
 * Limburg
 * 🇳🇱 Netherlands
 * Piedmont-Sardinia
 * Savoy
 * Wallonia
 * West Prussia
 * Zapadoslavia

Idk probably:
 * 🇮🇪 Ireland
 * Neuchatel
 * 🇳🇴 Norway
 * Piombino
 * 🇵🇹 Portugal
 * 🇪🇸 Spain
 * 🇸🇪 Sweden

Idk maybe:
 * 🇭🇷 Croatia
 * Holy See
 * 🇮🇸 Iceland
 * 🇵🇱 Poland
 * 🇨🇭 Switzerland

Ehhhhhh:
 * 🇦🇱 Albania
 * Aromania
 * 🇭🇺 Hungary
 * 🇲🇪 Montenegro
 * Ruthenia