geographic region of northwestern Iran. It lies west of Tehran and is bordered on the northwest by Azerbaijan and on the southwest by Kordestan. The region constitutes one of the uplands that frame central Iran and has an average elevation of 8,200 feet (2,500 m). It forms part of the Caspian Sea basin. The Zanjan River is the only major river in the region. Agriculture is the principal occupation, and crops include rice, corn (maize), oilseeds, fruits, and potatoes. Poultry, cattle, and sheep are raised. Manufactures include bricks, cement, milled rice, and carpets. Chromium, lead, and copper are mined. Roads and rail service link Zanjan, the principal city of the region, with Abhar and Mehrabad.
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