The answer is they had never experienced European
diseases before. Since they never encountered these kinds of diseases
before, their bodies had no resistance to them. 
When they were exposed, the effect was devastating as many perished upon
contracting the diseases.
 
        
             
        
        
        
What book is this from? please tell me and i will answer in the comments
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In the early modern world the "age of reason" and "Enlightenment" are the two terms that describe the intellectual characteristics of the eighteenth century.
The Enlightenment, commonly referred to as the Age of Reason, was an intellectual and cultural movement that promoted science over blind faith and reason over superstition in the eighteenth century.
The Age of Reason and the "long 18th century" are other names for the Enlightenment Period. It covered the years 1685 to 1815. Throughout Europe and the United States, philosophers and thinkers of the era held the view that science and reason could change and advance humanity.
Because of the emphasis on the superiority of reason over superstition and religion throughout that era, the 18th century is often referred to as the Age of Reason.
Learn more about the age of reason here:
brainly.com/question/19182869
#SPJ4
 
        
             
        
        
        
The belief that the united states had the right to expand its borders and claim new lands