Algodoo

A bunch of seperatist groups in eastern and northern Germany and northern Greece declare their own independence, Germany decides to give most of his colonies to other countries (except for German Namibia and German New Guinea).

Debuters:

Bulgaria (holder of the Bulgarian language)
Croatia (holder of the Croatian language)
Czechia (AKA Czechoslovakia, holder of the Czech language)
Denmark (holder of the Danish language)
Finland (holder of the Finnish language)
Norway (holder of the Norwegian language)
Poland (holder of the Polish language)
Romania (holder of the Romanian language)
Sweden (holder of the Swedish language)