PodoliaPodolia or Podilia (Podillia, poˈd(j)iljːɐ; Podolye; Podolia; Podole; Podolien; Padollie; Podolė; Podolie ) is a historic region in Eastern Europe, located in the west-central and south-western parts of Ukraine and in northeastern Moldova (i.e. northern Transnistria). Podolia is bordered by the Dniester River and the Carpathian arc. Covering an area of , it features an elongated plateau and fertile agricultural land. Its main rivers are the Dniester and the Southern Bug, which serve as important trade channels.
Polish People's RepublicThe Polish People's Republic (Polska Rzeczpospolita Ludowa, PRL), or simply Poland (Polska), was a country in Central Europe that existed from 1947 to 1989 as the predecessor of the modern-day Republic of Poland. With a population of approximately 37.9 million near the end of its existence, it was the second most-populous communist and Eastern Bloc country in Europe. A unitary state with a Marxist–Leninist government, it was also one of the main signatories of the Warsaw Pact alliance.
Kronstadt rebellionThe Kronstadt rebellion (Kronshtadtskoye vosstaniye) was a 1921 insurrection of Soviet sailors and civilians against the Bolshevik government in the Russian port city of Kronstadt. Located on Kotlin Island in the Gulf of Finland, Kronstadt defended the former capital city, Petrograd (now Saint Petersburg), as the base of the Baltic Fleet. For sixteen days in March 1921, rebels in Kronstadt's naval fortress rose in opposition to the Soviet government they had helped to consolidate.
Polish–Soviet WarThe Polish–Soviet War (late autumn 1918 / 14 February 1919 – 18 March 1921) was fought primarily between the Second Polish Republic and the Russian Soviet Federative Socialist Republic in the aftermath of World War I and the Russian Revolution, on territories which were formerly held by the Russian Empire and the Austro-Hungarian Empire.
World War IWorld War I or the First World War, often abbreviated as WWI or WW1, known contemporaneously as the Great War, was a major global conflict lasting from 1914 to 1918. It was fought between two coalitions, the Allies and the Central Powers. Fighting took place throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia. The first decade of the 20th century saw increasing diplomatic tension between the European great powers.
Green armiesThe Green armies (Зеленоармейцы), also known as the Green Army (Зелёная Армия) or Greens (Зелёные), were armed peasant groups which fought against all governments in the Russian Civil War from 1917 to 1922. The Green armies were semi-organized local militias that opposed the Bolsheviks, Whites, and foreign interventionists, and fought to protect their communities from requisitions or reprisals carried out by third parties. The Green armies were politically and ideologically neutral, but at times associated with the Socialist-Revolutionary Party.
Territories of Poland annexed by the Soviet UnionSeventeen days after the German invasion of Poland in 1939, which marked the beginning of the Second World War, the Soviet Union entered the eastern regions of Poland (known as the Kresy) and annexed territories totalling with a population of 13,299,000. Inhabitants besides ethnic Poles included Belarusian and Ukrainian major population groups, and also Czechs, Lithuanians, Jews, and other minority groups.