Regions of Belarus
At the start of the 20th century, the borders of the Belarusian lands in the Russian Empire were still being made. In 1900 it was made of the entire Minsk Governorate and Mogilev Governorate, most of  Grodno Governorate, parts of Vitebsk Governorate, and parts of Vilna Governorate (Vilna Governorate is now in Lithuania). World War I, the independence of Poland, and the 1920-1921 Polish–Soviet War changed the borders. In 1921, Belarus had what is now all of Minsk Region except for the western fringe, the western part of Gomel Region, a western slice of Mahilyow Region, and a small part of Vitebsk Region. In 1926, the eastern part of Gomel Region was added.