Troitsk

Town in Chelyabinsk Oblast, Russia, located 175 kilometers (109 mi) east of the southern Ural Mountains and approximately 110 kilometers (68 mi) south of Chelyabinsk on the border with Kazakhstan. It stands on the east-flowing Uy River, a branch of the Tobol River. Population: 78,372 (2010 Census).
Troitsk was founded in 1743 by Ivan Neplyuyev as a head fortress of the Orenburg Line of forts during the Bashkir War of 1735-1740 and to protect the southern borders of Russia. It played a major role in the rebellion of Pugachev, who besieged and captured the town in 1774. Gradually from a military settlement Troitsk has grown into a trading town with well-developed industry and nascent tourism.