Countries of kingdom of serbia, kingdom of montenegro, kingdom of bulgaria, kingdom of greece, thwy help eachother, tease eachother, they hate ottomans, theyre planning to invade the ottman empire, will bully you if you are mean to them and they  will invite you to the league if youre really nice. Serbia is obsessed with getting revenge on the Ottomans, Bulgaria is obsessed with unifying all Bulgarian lands, Greece wants northern Greece and Montenegro is just there, he is always kinda sleepy.