Aegean language (Pacifica)
Aegean is an ancient language originally spoken in regions of the Rainbow Islands, and to this day it's the official language spoken in UPRAN and Thalapadis, over in Central Cordilia, and the province of Aegea in New Dacia, in northwestern Bailtem.
OOC
Aegean is the same language as real-life Greek. It was the official language in both Rhayna and Proktethia, but since Proktethia doesn't exist any more, Rhayna, Thalapadis and New Dacia are the only nation that speak Aegean, and they aren't the origin of it.