The group of states including those in Northeastern United States.
Answer:
The Inca Empire, also known as the Incan Empire and the Inka Empire, was the largest empire in pre-Columbian America.
The administrative, political and military center of the empire was located in the city of Cusco.
The Inca civilization arose from the Peruvian highlands sometime in the early 13th century.
Explanation:
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B is the answer because the Europeans were immune to the virus and the Indians weren't so they grew very ill which helped the Europeans.