Question: Before 21 Lithuanian dukes signed a peace treaty with Galicia–Volhynia, what is an example of the war-related functions the group who made up the majority of the military-economic staff of the state performed?
Sentence (from "Poles in Ukraine"): In Late Middle Ages, following the extinction of Rurikid dynasty in 1323, the Kingdom of Poland extended east in 1340 to include the lands of Przemyśl and in 1366, Kamianets-Podilskyi (Kamieniec Podolski).
Relevant evidence: No