On the morning of 13 April 1940, NKVD soldiers came banging against the doors of the homes of more than 60,000 residents of eastern Poland. They ordered them to pack quickly and loaded them into cattle wagons.
The Union of Soviet Socialist Republics was the first communist state in history. The decision to create it was taken on 30 December 1922.
The first Siberian fortresses were built by Polish prisoners of war who had been taken captive by Moscow authorities precisely during the war initiated by Stefan Batory.