Western Belorussia

Western Belorussia or Western Belarus is a historical region of modern-day Belarus which belonged to the Second Polish Republic during the interwar period. For twenty years before the 1939 invasion of Poland, it was the northern part of the Polish Kresy macroregion. Following the end of World War II in Europe, most of Western Belorussia was ceded to the Soviet Union by the Allies, while some of it, including Białystok, was given to the Polish People's Republic. Until the dissolution of the Soviet Union in 1991, Western Belorussia formed the western part of the Byelorussian Soviet Socialist Republic. Today, it constitutes the west of modern Belarus.
Created by the USSR after the conquest of Poland, the new western provinces of Byelorussian SSR acquired from Poland included Baranavichy, Belastok, Brest, Vileyka and the Pinsk Regions. The majority of Belastok Region was returned to Poland and the rest of the regions were reorganized one more time after the Soviet liberation of Belarus into the contemporary western provinces of Belarus which include all of Grodno and Brest regions, as well as parts of today's Minsk and Vitebsk regions. Vilnius was returned by the USSR to the Republic of Lithuania which soon after that became the Lithuanian SSR.

Background

The territories of contemporary Belarus, Poland, Ukraine, and the Baltic states were a major theatre of operations during World War I; all the while, the Bolshevik Coup overturned the interim Russian Provisional Government and formed Soviet Russia. The Bolsheviks withdrew from the war with the Central Powers by signing the Treaty of Brest-Litovsk, and ceded Belarus to Germany for the next eight and a half months. The German high command used this window of opportunity to transfer its troops to the Western Front for the 1918 Spring Offensive, leaving behind a power vacuum. The non-Russians inhabiting the lands ceded by the Soviets to the German Empire, saw the treaty as an opportunity to set up independent states under the German umbrella. Three weeks after the Treaty of Brest-Litovsk was signed on 3 March 1918, the newly formed Belarusian Central Council founded the Belarusian People's Republic. The idea was rejected by the Germans, the Bolsheviks and the Americans. Woodrow Wilson rejected it, because the Americans intended to protect the territorial integrity of European Russia.
The fate of the region was not settled for the following three and a half years. The Polish–Soviet War which erupted in 1919, was particularly bitter; it ended with the Peace of Riga of 1921. Poland and the Baltic states emerged as independent countries bordering the USSR. The territory of modern-day Belarus was split by the treaty into Western Belorussia ruled by the Polish and the Soviet Eastern Belorussia, with the border town in Mikaszewicze. Notably, the peace treaty was signed with the full active participation of the Belarusian delegation on the Soviet side. In paragraph 3, Poland abandoned all rights and claims to the territories of Soviet Belarus, while Soviet Russia abandoned all rights and claims to Polish Western Belarus.

Rada of the Belarusian Democratic Republic in Exile

As soon as the Soviet-German peace treaty was signed in March 1918, the newly formed Rada of the Belarusian Democratic Republic laid territorial claims to Belarus based on areas specified in the Third Constituent Charter unilaterally as inhabited by the Belarusian majority. The same Rada charter also declared that the Treaty of Brest-Litowsk of March 1918 was invalid because it was signed by foreign governments partitioning territories that were not theirs.
In the Second Constituent Charter, the Rada abolished the right to private ownership of land in line with the Communist Manifesto. Meanwhile, by 1919, the Bolsheviks took control over large parts of Belarus and forced the Belarusian Rada into exile in Germany. The Bolsheviks formed the Socialist Soviet Republic of Byelorussia during the war with Poland on roughly the same territory claimed by the Belarusian Republic.
The League of Nations ratified the new Polish-Soviet border. The peace agreement remained in place throughout the interwar period. The borders established between the two countries remained in force until and the Soviet invasion of Poland. On Joseph Stalin's insistence, the borders were redrawn in the Yalta and Potsdam Conferences.

Second Polish Republic

"Despite Soviet efforts at sealing the border , peasants – refugees from the BSSR – crossed into Poland in the tens of thousands, wrote Per Anders Rudling. According to the Polish census of 1921, there were around 1 million Belarusians in the country. Some estimated the number of Belarusians in Poland at that time to be perhaps 1.7 million, or even up to. Following the Peace of Riga, thousands of Poles settled in the area, many of them were given land by the government.
In his negotiations with Belarusian leaders in Vilnius, Józef Piłsudski rejected the call for Western Belorussian independence. In December 1919 the Rada was dissolved by Poland, while by early January 1920 a new body was formed, the Rada Najwyższa, without aspirations for independence, but with proposed cultural, social and educational functions. Józef Piłsudski negotiated with the Western Belorussian leadership, but eventually abandoned the ideas of Intermarium, his own proposed federation of partially self-governing states on the lands of the former Polish–Lithuanian Commonwealth.
In the 1922 Polish legislative election, the Belarusian party in the Bloc of National Minorities obtained 14 seats in the Polish parliament. In the spring of 1923, Polish prime minister Władysław Sikorski ordered a report on the situation of the Belarusian minority in Poland. That summer, a new regulation was passed allowing for the Belarusian language to officially be used in courts and schools. Obligatory teaching of the Belarusian language was introduced in all Polish gymnasia in areas inhabited by Belarusians in 1927.

Polonization

The Belarusian population of West Belarus faced active Polonization by the central Polish authorities. The policy pressured Belarusian schooling, discriminated against the Belarusian language, and imposed the Polish national identity on Roman Catholics in Belarus.
In January 1921, the starosta from Wilejka wrote of the popular mood as being one of resignation and apathy among the Western Belorussian peasants, impoverished by food requisitions by the Bolsheviks and the Polish military. He insisted that, although the new Belarusian schools were 'springing up everywhere' in his county, they harbored anti-Polish attitudes.
In 1928 there were 69 schools with Belarusian language in Western Belorussia; the attendance was minimal due in part to lower quality of instruction. The first-ever textbook of Belarusian grammar was written only around 1918. In 1939, over 90% of children in Poland attended school. As elsewhere, the educational systems promoted Polish language there also. Meanwhile, the Belarusian agitators deported to the USSR from Poland were put in prison by the Soviet NKVD as bourgeois nationalists.
Most Polish inhabitants of the region supported the policy of cultural assimilation of Belarusians as proposed by Dmowski. The polonization drive was inspired and influenced by Dmowski's Polish National Democracy, who advocated refusing Belarusians and Ukrainians the right of free national development. Władysław Studnicki, an influential Polish official, stated that Poland's engagement in the East amounts to a much needed economic colonization. Belarusian nationalist media was pressured and censored by the Polish authorities.
Belarusians were divided along religious lines with roughly 70% being Orthodox and 30% Roman Catholic. According to Russian sources, discrimination was targeting assimilation of Eastern Orthodox Belarusians. The Polish church authorities promoted Polish in Orthodox services, and initiated the creation of the Polish Orthodox Societies in four cities including Slonim, Białystok, Vawkavysk, and Novogrodek. The Belarusian Roman Catholic priest Fr. Vincent Hadleŭski who promoted Belarusian in church, and Belarusian national awareness, was under pressure by his Polish counterparts. The Polish Catholic Church in Western Belorussia issued documents to priests about the usage of the Belarusian language rather than Polish language in Churches and Catholic Sunday Schools. The Warsaw-published instruction of the Polish Catholic Church from 1921 criticized priests preaching in Belarusian at the Catholic masses.

''Hramada''

Compared to the Ukrainian minority living in Poland, Belarusians were much less politically aware and active. The largest Belarusian political organization was the Belarusian Peasants' and Workers' Union, also referred to as the Hramada. Hramada received logistical help from the Soviet Union and the Communist International and served as a cover for the radical and subversive Communist Party of Western Belorussia. It was therefore banned by the Polish authorities, its leaders sentenced to various terms in prison and then deported to the USSR, where they were killed by the Soviet regime.
Tensions between the increasingly nationalistic Polish government and various increasingly separatist ethnic minorities continued to grow, and the Belarusian minority was no exception. Likewise, according to Marek Jan Chodakiewicz, the USSR considered Poland to be "enemy number one". During the Great Purge, the Polish National District at Dzyarzhynsk was disbanded and the Soviet NKVD undertook the so-called "Polish Operation" – where the Poles in East Belorussia, i.e. BSSR, were deported and executed. The operation caused the deaths of up to 250,000 people – out of an official ethnic Polish population of 636,000 – as a result of political murder, disease or starvation. Amongst these, at least 111,091 members of the Polish minority were shot by NKVD troika. According to Bogdan Musiał, many were murdered in prison executions. In addition, several hundred thousand ethnic Poles from Belarus and Ukraine were deported to other parts of the Soviet Union.
The Soviets also promoted the Soviet-controlled BSSR as formally autonomous to attract Belarusians living in Poland. This image was attractive to many Western Belorussian national leaders, and some of them, like Frantsishak Alyakhnovich or Uładzimir Žyłka emigrated from Poland to the BSSR, but very soon became victims of Soviet repression.