Ukraine
Overview
 
Ukraine is a country in Eastern Europe
Eastern Europe
Eastern Europe is the eastern part of Europe. The term has widely disparate geopolitical, geographical, cultural and socioeconomic readings, which makes it highly context-dependent and even volatile, and there are "almost as many definitions of Eastern Europe as there are scholars of the region"...

. It has an area of 603,628 km², making it the second largest contiguous country on the Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

an continent, after Russia. Ukraine borders the Russian Federation
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

 to the east and northeast, Belarus
Belarus
Belarus , officially the Republic of Belarus, is a landlocked country in Eastern Europe, bordered clockwise by Russia to the northeast, Ukraine to the south, Poland to the west, and Lithuania and Latvia to the northwest. Its capital is Minsk; other major cities include Brest, Grodno , Gomel ,...

 to the northwest, Poland
Poland
Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

, Slovakia
Slovakia
The Slovak Republic is a landlocked state in Central Europe. It has a population of over five million and an area of about . Slovakia is bordered by the Czech Republic and Austria to the west, Poland to the north, Ukraine to the east and Hungary to the south...

 and Hungary
Hungary
Hungary , officially the Republic of Hungary , is a landlocked country in Central Europe. It is situated in the Carpathian Basin and is bordered by Slovakia to the north, Ukraine and Romania to the east, Serbia and Croatia to the south, Slovenia to the southwest and Austria to the west. The...

 to the west, Romania
Romania
Romania is a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea...

 and Moldova
Moldova
Moldova , officially the Republic of Moldova is a landlocked state in Eastern Europe, located between Romania to the West and Ukraine to the North, East and South. It declared itself an independent state with the same boundaries as the preceding Moldavian Soviet Socialist Republic in 1991, as part...

 to the southwest, and the Black Sea
Black Sea
The Black Sea is bounded by Europe, Anatolia and the Caucasus and is ultimately connected to the Atlantic Ocean via the Mediterranean and the Aegean seas and various straits. The Bosphorus strait connects it to the Sea of Marmara, and the strait of the Dardanelles connects that sea to the Aegean...

 and Sea of Azov
Sea of Azov
The Sea of Azov , known in Classical Antiquity as Lake Maeotis, is a sea on the south of Eastern Europe. It is linked by the narrow Strait of Kerch to the Black Sea to the south and is bounded on the north by Ukraine mainland, on the east by Russia, and on the west by the Ukraine's Crimean...

 to the south and southeast, respectively.

Established by the Varangians
Varangians
The Varangians or Varyags , sometimes referred to as Variagians, were people from the Baltic region, most often associated with Vikings, who from the 9th to 11th centuries ventured eastwards and southwards along the rivers of Eastern Europe, through what is now Russia, Belarus and Ukraine.According...

 in the 9th century, the medieval state of Kievan Rus'
Kievan Rus'
Kievan Rus was a medieval polity in Eastern Europe, from the late 9th to the mid 13th century, when it disintegrated under the pressure of the Mongol invasion of 1237–1240....

, the first East Slavic
East Slavs
The East Slavs are Slavic peoples speaking East Slavic languages. Formerly the main population of the medieval state of Kievan Rus, by the seventeenth century they evolved into the Russian, Ukrainian, and Belarusian peoples.-Sources:...

 state, emerged as a powerful nation in the Middle Ages
Middle Ages
The Middle Ages is a periodization of European history from the 5th century to the 15th century. The Middle Ages follows the fall of the Western Roman Empire in 476 and precedes the Early Modern Era. It is the middle period of a three-period division of Western history: Classic, Medieval and Modern...

 until it disintegrated in the 12th century.
Timeline

1651    The Battle of Beresteczko between Poland and Ukraine starts.

1659    At the Battle of Konotop the Ukrainian armies of Ivan Vyhovsky defeat the Russians led by Prince Trubetskoy.

1673    Second Battle of Khotyn in Ukraine: Polish-Lithuanian Commonwealth forces under the command of Jan Sobieski defeat the Ottoman army. In this battle, rockets made by Kazimierz Siemienowicz are successfully used.

1917    Ukraine is declared a republic.

1918    The Ukraine declares independence from Bolshevik Russia.

1918    Western Ukraine gains its independence from the Austro-Hungarian Empire.

1941    Nazi Germans massacre Polish scientists and writers in the captured Ukrainian city of Lviv.

1941    World War II: On Jewish New Year Day, the German SS murder 6,000 Jews in Vinnytsya, Ukraine. Those are the survivors of the previous killings that took place a few days earlier in which about 24,000 Jews were executed.

1941    World War II: Holocaust in Kiev, Ukraine: German Einsatzgruppe C begins the Babi Yar massacre, according to the Einsatzgruppen operational situation report.

1941    World War II: Holocaust in Kiev, Ukraine: German Einsatzgruppe C complete Babi Yar massacre.

 
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