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.
Ukraine–European Union Association Agreement
Beginning in the late 18th century most of Ukraine was first part of the Russian Empire. Afterwards, Western Ukraine was part of the Austro-Hungarian Empire and then passed to the Second Polish Republic until the 1939 Soviet invasion of Poland. Ukraine then joined the Soviet Union (both the Russian SSR and the Ukrainian SSR united into the Soviet Union from 1922) until Ukraine declared independence from the Soviet Union on 24 August 1991. Independent Ukraine originally maintained strong ties with Russia, and as such Ukraine's economy became integrated with the Russian economy.