 They conquered the large Aztec and Inca empires and incorporated them into the Empire as the Viceroyalties of New Spain and Peru between 1519 and 1542.Combined with the circumnavigation of the globe by the Magellan expedition in 1522, these successes convinced Charles of his divine mission to become the leader of Christendom, which still perceived a significant threat from Islam.The conquests also helped solidify Charles's rule by providing the state treasury with enormous amounts of bullion.