How did the first conquistadors justify their conquest of the aztec and inca empires

They justified their conquest as a massive "holy war" to convert the aztec and inca to catholicism; if they instead murdered more than converted; they got the gold,land, and other minerals from the conquered peoples; as well as some slaves from the surviving poppulace; the cultural and religous societies the aztec and inca and others had did things the conquistadors and the countries they left from disliked; like a monotheistic noncatholicism religion and human sacrafice; the spanish also fought a bloody war to drive out the moslem north african decended rulers and also fought bloody wars against protestent europeans including some spanish; so the spanish conquistadors were used to fighting and destroying non catholic countries; and making plunder and slaves of the defeated after; while using their view of catholic and gentile cultural need to "civilize" and get "glory or credit for the conquest.

This one hard but um i have no idea i’m sorry

They wanted to make slaves out of them.they wanted force them to move off their landthey wanted to make them grow crops for very little pay.they refused to speak native american languages