Russia (Russian: Росси́я, tr. Rossiya, IPA: [rɐˈsʲijə]), or the Russian Federation, is a transcontinental country located in Eastern Europe and Northern Asia. Covering an area of 17,125,200 square kilometres (6,612,100 sq mi), it is the largest country in the world by area, spanning more than one-eighth of the Earth's inhabited land area, stretching eleven time zones, and bordering 16 sovereign nations. The territory of Russia extends from the Baltic Sea in the west to the Pacific Ocean in the east, and from the Arctic Ocean in the north to the Black Sea and the Caucasus in the south. With 146.7 million inhabitants living in the country's 85 federal subjects, Russia is the most populous nation in Europe and the ninth-most populous nation in the world. Russia's capital and largest city is Moscow; other major urban areas include Saint Petersburg, Novosibirsk, Yekaterinburg, Nizhny Novgorod, Kazan and Chelyabinsk.
The East Slavs emerged as a recognisable group in Europe between the 3rd and 8th centuries AD. The medieval state of Rus' arose in the 9th century. In 988 it adopted Orthodox Christianity from the Byzantine Empire, beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium. Rus' ultimately disintegrated into a number of smaller states, until it was finally reunified by the Grand Duchy of Moscow in the 15th century. By the 18th century, the nation had greatly expanded through conquest, annexation, and exploration to become the Russian Empire, which was the third largest empire in history, stretching from Norway on the west to Alaska on the east.
