 Spain's silver mining and crown mints created high quality coins, the currency of Spanish America, the silver peso or Spanish dollar that became a global currency.Spanish conquerors did not bring all areas of Aztec Empire under its control.After the fall of Tenochtitlan in 1521, it took decades of sporadic warfare to subdue the rest of Mesoamerica, particularly the Maya regions of southern New Spain and into what is now Central America.