Ukrainian Soviet Socialist Republic
The Ukrainian Soviet Socialist Republic (Ukrainian SSR or UkrSSR or UkSSR; , УРСР ; , УССР ; see "Name" section below), also known as the Soviet Ukraine, was one of the constituent republics of the Soviet Union from the Union's inception in 1922 to its breakup in 1991. The republic was governed by the Communist Party of Ukraine as a unitary one-party socialist soviet republic.
Universals (Central Council of Ukraine)
On 25 January 1918 (backdated 22 January 1918) IV Universal declared independence of Ukraine so the Ukrainian People's Republic could conclude an international treaty with the Central Powers. It also condemned Bolshevik aggression.