The answer is b: the native people lacked natural immunities
The Reconstruction Amendments are the Thirteenth, Fourteenth, and Fifteenth amendments to the United States Constitution, passed between 1865 and 1870, the five years immediately following the Civil War. ... The Thirteenth Amendment (proposed and ratified in 1865) abolished slavery.
Explanation:
Publisher Information
Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide. OUP is the world's largest university press with the widest global presence. It currently publishes more than 6,000 new publications a year, has offices in around fifty countries, and employs more than 5,500 people worldwide. It has become familiar to millions through a diverse publishing program that includes scholarly works in all academic disciplines, bibles, music, school and college textbooks, business books, dictionaries and reference books, and academic journals.
Answer:
Christopher Columbus was an Italian explorer and colonizer who completed four voyages across the Atlantic Ocean that opened the New World for conquest and permanent European colonization of the Americas.
Explanation: