Nizhny Novgorod, colloquially shortened to Nizhny, is a city in the administrative center of Nizhny Novgorod Oblast and Volga Federal District in Russia. From 1932 to 1990, it was known as Gorky, after the writer Maxim Gorky, who was born there. The city is an important economic, transportation, scientific, educational and cultural center in Russia and the vast Volga-Vyatka economic region, and is the main center of river tourism in Russia. In the historical part of the city there are a large number of universities, theaters, museums and churches. Nizhny Novgorod is located about 400 km east of Moscow, where the Oka empties into the Volga. Population:The city was founded in 1221 by Prince Yuri II of Vladimir. In 1612 Kuzma Minin and Prince Dmitry Pozharsky organized an army for the liberation of Moscow from the Poles. In 1817 Nizhny Novgorod became a great trade center of the Russian Empire. In 1896 at a fair, an All-Russia Exhibition was organized.