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.
Byelorussian Soviet Socialist Republic
On the international stage, Byelorussia (along with Ukraine) was one of only two republics to be separate members of the United Nations. Both republics and the Soviet Union joined the UN when the organization was founded with the other 50 states on 24 October 1945. In effect, this provided the Soviet Union (a permanent Security Council member with veto powers) with another vote in the General Assembly.