Ukraine is a country in Eastern Europe. It has an area of 603,628 km2 — including Crimea, which is de facto controlled by neighboring Russia — making it the largest country entirely within Europe. Ukraine borders Russia to the east and northeast, Belarus to the northwest, Poland, Slovakia and Hungary to the west, Romania and Moldova to the southwest, and the Black Sea and Sea of Azov to the south and southeast, respectively.The territory of Ukraine has been inhabited for at least 44,000 years, with the country being a candidate site for the domestication of the horse and for the origins of the Indo-European language family.In the Middle Ages, the area became a key center of East Slavic culture, as epitomized by the powerful state of Kievan Rus'. Following its fragmentation in the 13th century, Ukraine was contested, ruled and divided by a variety of powers. A Cossack republic emerged and prospered during the 17th and 18th centuries, but Ukraine remained otherwise divided until its consolidation into a Soviet republic in the 20th century, becoming an independent state only in 1991.Ukraine has long been a global breadbasket due to its extensive, fertile farmlands. As of 2011, it was the world's third-largest grain exporter with that year's harvest being much larger than average. Ukraine is one of the ten most attractive agricultural land acquisition regions. Additionally, the country has a well-developed manufacturing sector, particularly in aerospace and industrial equipment.Ukraine is a unitary republic under a semi-presidential system with separate legislative, executive, and judicial branches. Its capital and largest city is Kiev. Since the dissolution of the Soviet Union, Ukraine continues to maintain the second-largest military in Europe, after that of Russia, when reserves and paramilitary personnel are taken into account.The country is home to 44.6 million people, 77.8% of whom are of Ukrainian ethnicity and with sizable minorities of Russians, Belarusians, Tatars and Romanians. Ukrainian is the official language of Ukraine; its alphabet is Cyrillic. Russian is also widely spoken. The dominant religion in the country is Eastern Orthodox Christianity, which has strongly influenced Ukrainian architecture, literature and music.There are different hypotheses as to the etymology of the name Ukraine. According to an older and most widespread hypothesis, it means "borderland", while more recently some linguistic studies claim a different meaning: "homeland" or "region, country". "The Ukraine" was once the usual form in English but since the Declaration of Independence of Ukraine, "the Ukraine" has become much less common in the English-speaking world and style-guides largely recommend not using the definite article.