Western Siberia or West Siberia (Russian: Западная Сибирь , IPA: [ˈzapədnəjə sʲɪˈbʲirʲ] ; Kazakh: Batys Sıbır , IPA: [bɑˈtə̥s sɘˈbɘr] ) is a region in North Asia . It is part of the wider region of Siberia that is mostly located in the Russian Federation , with a Southern part in Kazakhstan . It lies between the Ural region and the Yenisei River , which conventionally divides Siberia into two halves.
2-673: Western Siberia covers an area of 2,500,000 square kilometers (970,000 sq mi), nearly 80% of which is located within the West Siberian Plain . The largest rivers of the region are the Irtysh and the Ob . All major rivers of Western Siberia belong to the Kara Sea basin. The West Siberian petroleum basin is the largest hydrocarbon ( petroleum and natural gas ) basin in the world covering an area of about 2.2 million km, and
4-792: Is also the largest oil and gas producing region in Russia. In medieval times , parts of the region were part of the Golden Horde . After its gradual decline during the 15th century, the Khanate of Sibir , centered on Tyumen , was formed within the area. In the late 16th century, most of Western Siberia was conquered by the Russian Empire , while its southern region became part of the Kazakh Khanate . The current international borders between Russia and Kazakhstan came into being in
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