Junín (hōnēnˈ) [key], city (1991 pop. 70,138), Buenos Aires prov., E Argentina, on the Salado River. It is a busy commercial center for an agricultural and livestock area. There are important railroad repair shops. Its fishing industry has developed gradually. Junín began as a frontier fort (est. 1827) during the struggle against the Native Americans of Pampa.
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