Which of the following was a similarity between classical mesoamarican and south america civilizations

Civilization in each region developed advance math,science, and engineering.

Bartolomé de Las Casas is describing the way that Spanish conquistadors took advantage of and abused the native populations in the New World.  He felt that the behavior of his fellow Spaniards was inhumane and ungodly.  

The natives were a decent people, and the Spaniards abused them without reason.  Las Casas contended that "of all the infinite universe of humanity, these people [the natives in the Indies] are the most guileless, the most devoid of wickedness and duplicity, the most obedient and faithful to their native masters and to the Spanish Christians whom they serve."The natives had not provoked the conquistadors.  "Only after the Spaniards had used violence against them ... did the Indians ever rise up against" the Spaniards, Las Casas contended.The Spaniards supposed Christianity was not true Christianity, because these "Christians" had as their "ultimate aim ... to acquire gold, and to swell themselves with riches in a very brief time."

Additional info:

Bartolomé de Las Casas was a missionary from the Dominican order of friars.  He was also a historian who wrote the 3-volume work, A History of the Indies, spanning the history of the "Indies" region in the New World from Christopher Columbus' arrival in 1492 to about 1520.    Not only was Las Casas eager and zealous about teaching Christianity to the natives in the New World, he was also a strongly vocal critic of the way Spanish conquistadors were abusing and enslaving Native Americans.  In his 1542 work, A Brief Account of the Devastation of the Indies, Las Casas wrote with horror concerning what he saw happening to the natives in the Indies, from which the section quoted in this question is taken.