Complex sentence: Despite tension that developed with Mexican authorities trying to restrict American activities, Young became a successful trapper and businessman, eventually setting up a trading post in Pueblo de Taos in northern Nuevo Mexico, in the late 1820s.
Split into simpler sentences: Despite tension that developed with Mexican authorities trying to restrict American activities, Young became a successful trapper and businessman. He eventually set up a trading post in Pueblo de Taos in northern Nuevo Mexico, in the late 1820s.