Original sentence: Following this defeat, a period of internal strife occurred within the party, culminating with the formation of two internal groups: the proto-fascist Siol nan Gaidheal and left-wing 79 Group
Edited sentence: Following this defeat, a period of internal strife occurred within the party, culminating with the formation of two internal groups: the ultra-nationalist Siol nan Gaidheal and left-wing 79 Group