Galicia-Volhynia

The Kingdom of Galicia–Volhynia, also known as the Kingdom of Ruthenia or Rus', was a medieval state in Eastern Europe that existed from 1199 to 1349. It was one of the three most important powers to emerge from the collapse of Kievan Rus', alongside Novgorod and Vladimir-Suzdal. Its territory was predominantly located in modern-day Ukraine, with parts in Belarus, Poland, Romania, Moldova, and Lithuania. Roman the Great united the principalities of Galicia and Volhynia around the turn of the 13th century. After the Mongol invasion of Kievan Rus', Prince Daniel of Galicia pledged allegiance to Batu Khan in 1246 and was crowned King of Ruthenia by the Pope in 1253. The kingdom was fully absorbed by Poland following its conquest in 1349.