Which impact did the spanish exploration have on the native americans?

Well, Native Americans had a bad impact with the Spanish exploration. The natives had no immunity to the diseases the spanish had brought over with them (examples are smallpox, influenza, and chicken pox). This caused a lot of american Indians to get sick and die. If this is a multiple choice question, it would be alot better if you could add the choices.

answer: intercourse

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answer; earthquake;