Helped determine our distance from the sun and might have an atmosphere, like Earth.
Answer:
Native peoples of America had no immunity to the diseases that European explorers and colonists brought with them. Diseases such as smallpox, influenza, measles, and even chicken pox proved deadly to American Indians. Europeans were used to these diseases, but Indian people had no resistance to them.
Explanation:
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OOH! this one is "copperheads"!
