Answer:
Natives people of America had no immunity to diseases that European explorers and colonists brought with them. Diseases such as small pox, influenza, measles, and even Chicken pox proved deadly to the American Indians. Europeans were used to these diseases, Indian people had no resistance to them.
Answer:
The Aztec Empire was based in the Valley of Mexico, a wide, high elevation valley in the mountains of Central Mexico. In this wide valley, the Aztecs were unified as one people, who called themselves the Mexica. ... Additionally, lake soil is very fertile, which allowed the Aztecs to develop agriculture
Explanation: