 After Belarus was incorporated into the Soviet Union, the Soviet government took control of the Republic's cultural affairs. At first, a policy of "Belarusianization" was followed in the newly formed Byelorussian SSR. This policy was reversed in the 1930s, and the majority of prominent Belarusian intellectuals and nationalist advocates were either exiled or killed in Stalinist purges. The free development of literature occurred only in Polish-held territory until Soviet occupation in 1939. Several poets and authors went into exile after the Nazi occupation of Belarus and would not return until the 1960s.
