Slavs
Slavs are the largest ethno-linguistic group in Europe. Present-day Slavic people are classified into East Slavs (chiefly Belarusians, Russians, Rusyns, and Ukrainians), West Slavs (chiefly Czechs, Kashubs, Moravians, Poles, Silesians, Slovaks and Sorbs), and South Slavs (chiefly Bosniaks, Bulgarians, Croats, Macedonians, Gorani, Pomaks, Montenegrins, Serbs and Slovenes).
Ukrainian People's Republic of Soviets
The Ukrainian People's Republic of Soviets (1917–1918) was a short-lived Soviet republic of the Russian SFSR that was created by the declaration of the Kharkiv All-Ukrainian Congress of Soviets "About the self-determination of Ukraine" on in the Noble Assembly building in Kharkiv. The republic was later united into the Ukrainian Soviet Republic and, eventually, liquidated, because of a cessation of support from the government of the Russian SFSR when the Treaty of Brest-Litovsk was signed.