Ukrainians in Russia include all the family of hetman Ivan Mazepa, A. Vojnarovsky, and those in Mazepa's Cossack forces that returned to Russia. Some were imprisoned in exile for the rest of their lives such as hetmanPavlo Polubotok, Pavlo Holovaty, P. Hloba and Petro Kalnyshevsky. Beginning in the 19th century, there was a continuous migration from Belarus, Ukraine and Northern Russia to settle the distant areas of the Russian Empire. The promise of free fertile land was an important factor for many peasants who until 1861, lived under Serfdom. In the colonization of the new lands, a significant contribution was made by ethnic
Natural gas in Russia of oil, making the deal closer to what Russia had wanted than to what China had been asking for. The total value of the deal was estimated at US$400 billion. It will increase Russian exports to countries not part of the former Soviet Union by 25% and make China the country's 2nd largest customer, after Germany. The agreement was reached as Chinese and Russian leaders met to discuss greater cooperation in Asia without involvement of Western powers. It was seen as an important political and economic victory for Russian President Vladimir Putin. It allows Russia to diversify its natural business