Day of National Unity in the Republic of Belarus (Day of National Adzinism)

In 1921, under the terms of the Riga Peace Treaty, the western territories of Belarus went to Poland In 1939, the USSR annulled all agreements concluded with Poland According to the will of the Belarusians and Ukrainians, their territories of residence became part of the USSR This became possible thanks to the Polish liberation campaign of the Red Army, which began on September 17