The townships are: In August 2010, three former townships of Sagaing Region were transferred, in accordance with the 2008 constitution, to a new administrative unit the Naga Self-Administered Zone which is no longer part of Sagaing Region. Those townships were Lahe, Leshi and Nanyun. The Bamar (Burmans) are the majority ethnic group in the dry regions and along the Mandalay-Myitkyina Railroad. Shan live in the upper Chindwin River valley. A sizable minority of Naga resides in the north of north-west mountain ranges and Kuki which includes the Thadou in the south. Smaller ethnic groups native to the Region include the Kadu and Ganang, who live in the upper Mu River valley and Meza River valley. There are also an unknown number of Catholic Bayingyi people (at least 3,000), the descendants of 16th and 17th century Portuguese adventurers and mercenaries, who live in their ancestral villages on the expansive plains of the Mu River valley. There are a number of protected areas in Sagaing Region, among them are Alaungdaw Kathapa National Park, Chatthin Wildlife Sanctuary, Mahamyaing Wildlife Sanctuary, and Htamanthi Wildlife Sanctuary in Homalin Township. Hemmed in by two great rivers of Myanmar, the Irrawaddy and the Chindwin, river transport is a common way to move people and cargo. Much of the inland Sagaing Region relies on roads and rail in poor condition. Agriculture is the chief occupation. The leading crop is rice, which occupies most of the arable ground. Other crops include wheat, sesame, peanut, pulses, cotton, and tobacco. The region being next to India, depends on the export import business from India. It is the gateway to India for Myanmar. Sagaing is Myanmar’s leading producer of wheat, contributing more than 80% of the country's total production. Forestry is important in the wetter upper regions along the Chindwin River, with teak and other hardwoods extracted. As in other parts of the country, reforestation is not effective enough to maintain sustainable forestry. Important minerals include gold, coal, salt and small amounts of petroleum. Industry includes textiles, copper refining, gold smelting, and a diesel engine plant. The Region has many rice mills, edible oil mills, saw mills, cotton mills, and mechanized weaving factories. Local industry includes earthen pots, silverware, bronze-wares, iron-wares and lacquerware.