Ukraine is a country in Eastern Europe. It is the second-largest European country after Russia, which borders it to the east and northeast. It also borders Belarus to the north; Poland, Slovakia, and Hungary to the west; and Romania and Moldova to the southwest; with a coastline along the Black Sea and the Sea of Azov to the south and southeast. Kyiv is the nation's capital and largest city, followed by Kharkiv, Dnipro and Odesa. Ukraine's official language is Ukrainian; Russian is also widely spoken, especially in the east and south.
Early Indo-European migrations from the Pontic steppes of present-day Ukraine and Russia
The furthest extent of Kievan Rus', 1054–1132
Hetman Bohdan Khmelnytsky established an independent Cossack state after the 1648 uprising against Poland.
Polish troops enter Kyiv in May 1920 during the Polish–Soviet War. Following the Peace of Riga signed on 18 March 1921, Poland took control of modern-day western Ukraine while Soviets took control of eastern and central Ukraine.
Eastern Europe is a subregion of the European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural, and socio-economic connotations. Its eastern boundary is marked by the Ural Mountains, whilst its western boundary is defined in various ways. Most definitions include the countries of Belarus, Russia, Ukraine, Moldova and Romania while less restrictive definitions may also include some or all of the Balkans, the Baltic states, the Caucasus and the Visegrád group.
Expansion of Christianity