what was the purpose of the spanish encounting the aztecs and what were the spanish hoping for by making friends with the native americans?

Pure colonialism.

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The purpose of the Spanish encountering the Aztecs was mainly driven by their desire for wealth and expansion of their empire. When the Spanish arrived in the Americas, they were seeking to find gold, silver, and other valuable resources to bring back to Europe. The Aztec civilization, with its advanced agricultural methods and abundant resources, offered great potential for the Spanish in terms of material wealth.

In addition to seeking riches, the Spanish also hoped to establish alliances and make friends with the native Americans. This was driven partly by the desire to convert the native population to Christianity and partly for strategic reasons. By forming alliances with native groups, the Spanish aimed to secure their control over the region, as these alliances provided them with military support, labor, and local knowledge.

To achieve these goals, the Spanish engaged in various strategies such as negotiation, manipulation, establishing trade relationships, leveraging technological superiority, and employing military force when necessary. Overall, the Spanish saw the encounter with the Aztecs and other native American civilizations as an opportunity to expand their influence, acquire wealth, and spread their religious and cultural beliefs.