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.
On 18 March 1921, the treaty ending the Polish-Bolshevik war (the so-called Treaty of Riga) was signed in Riga.
Prayer of the Bar Confederates before the Battle of Lanckorona, oil painting by Artur Grottger.
