linguistic:translation, linguistic:voice_change, structural:expansion
Inter-war period

During the inter-war period, in Poland, Marshal Józef Piłsudski sought Ukrainian support by offering local autonomy as a way to minimise Soviet influence in Poland's eastern Kresy region. However, this approach was abandoned after Piłsudski's death in 1935, due to continued unrest among the Ukrainian population, including assassinations of Polish government officials by the Organisation of Ukrainian Nationalists (OUN); with the Polish government responding by restricting rights of people who declared Ukrainian nationality. In consequence, the underground Ukrainian nationalist and militant movement, which arose in the 1920s gained wider support.

Meanwhile, the recently constituted Soviet Ukraine became one of the founding republics of the Soviet Union. During the 1920s, under the Ukrainisation policy pursued by the national Communist leadership of Mykola Skrypnyk, Soviet leadership at first encouraged a national renaissance in Ukrainian culture and language. Ukrainisation was part of the Soviet-wide policy of Korenisation (literally indigenisation), which was intended to promote the advancement of native peoples, their language and culture into the governance of their respective republics.

Around the same time, Soviet leader Vladimir Lenin instituted the New Economic Policy (NEP), which introduced a form of market socialism, allowing some private ownership of small and medium-sized productive enterprises, hoping to reconstruct the post-war Soviet Union that had been devastated by both WWI and later the civil war. The NEP was successful at restoring the formerly war-torn nation to pre-WWI levels of production and agricultural output by the mid-1920s, much of the latter based in Ukraine. These policies attracted many prominent former UNR figures, including former UNR leader Hrushevsky, to return to Soviet Ukraine, where they were accepted, and participated in the advancement of Ukrainian science and culture.

This period was cut short when Joseph Stalin became the leader of the USSR following Lenin's death. Stalin did away with the NEP in what became known as the Great Break. Starting from the late 1920s and now with a centrally planned economy, Soviet Ukraine took part in an industrialisation scheme which quadrupled its industrial output during the 1930s.

However, as a consequence of Stalin's new policy, the Ukrainian peasantry suffered from the programme of collectivization of agricultural crops. Collectivization was part of the first five-year plan and was enforced by regular troops and the secret police known as Cheka. Those who resisted were arrested and deported to gulags and work camps. As members of the collective farms were sometimes not allowed to receive any grain until unrealistic quotas were met, millions starved to death in a famine known as the Holodomor or the "Great Famine", which was recognized by some countries as an act of genocide perpetrated by Joseph Stalin and other Soviet notables.

Following on the Russian Civil War and collectivisation, the Great Purge, while killing Stalin's perceived political enemies, resulted in a profound loss of a new generation of Ukrainian intelligentsia, known today as the Executed Renaissance.