NORTH AMERICA Montana

Montana Area : 3,80,841 sq. km, rank: 4 Capital: Helens BUTTE ·         World’s richest copper ore region. ·         Most productive copper mine in the USA and also known for its silver reserve. Colorado Area: 2,69,596 sq. km., rank:8 Capital: Denver Climax mine of Coloradoans probably the world’s largest molydenummine. DENVER ·         Most important town of the high plains. ·         Also known as mile high city. ·         Region known for its oil refining industry. ·         PUEBLO ·         An important iron and steel centre. Arizona Area: 2,95,260 sq. km, rank: 6 Capital: phoenix, neighbors: Utah (north), New Mexico (east), Mexico ( south), California (west),  Nevada ( north west) PHOENIX ·         Situated 8in the central part of the irrigated valley of Salt River. ·         Important aluminum and iron-steel manufacturing centre and aircraft assembly is located here. MORENCI ·         Leading copper mining area of Arizona. ·           ·         Yellow stone national park; the world’s best known geyser is perhaps  old faithul which erupts at regular intervals every 63 minutes on an average.