On 18 March 1921, the treaty ending the Polish-Bolshevik war (the so-called Treaty of Riga) was signed in Riga.
On 12 February 1833, Aleksander Czekanowski was born in Krzemieniec in Volhynia. He trained as a geologist, but was not given the freedom to pursue his career as he was sent to Siberia at the age of 30 for taking part in the January Uprising.