15 the biggest Russian cities - 3. 7th.Kazan.It has population about 1 161 000 people(the agglomeration has 1 560 000 people).It is the capital of Tatarstan.The republic of Tatarstan is situated in Volga Federal District.Kazan was founded in 1005(or 1391) year.And it was the capital of the khanate of Kazan in the past. 8th.Omsk.It has population about 1 150 000 people.The city is the capital of Omsk oblаst.This oblаst is situated in Siberian Federal District.Omsk was founded in 1716 year. 9th.Chelyabinsk.It has population about 1 140 000 people(the agglomeration has more than 2 000 000 people).It is the capital of Chelyabinsk oblаst(this is situated in Ural Federal District).The city was founded in 1736 year. To be continued...