Volhynia
In the 16th century, with the 1569 Treaty of Lublin, Volhynia became a largely self-governing part of the Polish-Lithuanian Commonwealth, keeping its Ukrainian character but having its elite become Polish, or Polonized. Most of Volhynia was annexed by the Russian Empire in the late 18th century due to the partitions of Poland. But Austria also got to annex a small part of Volhynia during this time.