The territory should be called New Spain because it shares many qualities with Spain, including the fertility of its soil. Even the climate is much like that of Spain. Finally, Cortés mentions that the land bears a “striking resemblance” to Spain.
Assuming that you are referring to the territories of today's Mexico, formerly know as <em>New Spain</em>, here is the paragraph:
As Hernan Cortes campaigned throughout the first continental lands of America, the idea that many Spaniards, probably even himself, harbored was that of founding Spain all over again in the newly found and conquered lands. A mix of nostalgia and pride for the Motherland, Spain, must have prompted the <em>Conquistadors</em> to name the cities and provinces they founded after cities and provinces already existing in Spain. One reason for using already familiar names had to do with the difficulty of pronouncing the original names of the places given by the native people, the other one had to do with a sense of control, since most people hold the belief that naming things bestows them with a degree of control over them. And yet another reason may have been the comfort of living in places named after their old home towns and provinces the Spaniards had come from.
