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).
History of Ukraine
This term seems to have been synonymous with the land of Rus' propria—the principalities of Kiev, Chernigov and Pereyaslav. The term, "Greater Rus'" was used to apply to all the lands of entire Kievan Rus, including those that were not just Slavic, but also Uralic in the north-east portions of the state. Local regional subdivisions of Rus' appeared in the Slavic heartland, including, "Belarus'" (White Russia), "Chorna Rus'" (Black Russia) and "Cherven' Rus'" (Red Russia) in northwestern and western Ukraine.