(A) Lithuania
(B) Russia
(C) ** Poland
(D) Latvia
EXPLANATIONS BELOW
Concept note-1: -However, by 1920, 30% of the population was from Poland with Lithuanians only making up 2% of the city’s population. In 1920, the Poles seized Vilna. Lithuania asked for League help but the Poles could not be persuaded to leave the city. Vilna stayed in Polish hands until the outbreak of World War Two.
Concept note-2: -The Vilna offensive was a campaign of the Polish–Soviet War of 1919–1921. The Polish army launched an offensive on April 16, 1919, to take Vilnius (Polish: Wilno) from the Red Army. After three days of street fighting from April 19–21, the city was captured by Polish forces, causing the Red Army to retreat.
Concept note-3: -In 1991 Vilnius again became the capital of independent Lithuania. A prominent feature of the city before World War II was its Jewish community, for nearly 150 years the centre of eastern European Jewish cultural life.
Concept note-4: -Polish forces occupied Vilna in 1920, and before the outbreak of World War II, the city of Vilna was part of northeastern Poland. Under the terms of the German-Soviet Pact, Vilna, along with the rest of eastern Poland, was occupied by Soviet forces in late September 1939.
Concept note-5: -The League of Nations arranged a partial armistice (October 7, 1920) that put Vilnius under Lithuanian control and called for negotiations to settle all the border disputes.