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What was the primary cause of the spread of contagious diseases throughout history until the Renaissance? unclean water human migration forced quarantine open sewers​
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What was the primary cause of the spread of contagious diseases throughout history until the Renaissance?

unclean water
human migration
forced quarantine
open sewers​

User Aayush Dahal
by
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2 Answers

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human migration! diseases spread because a lot of people traveled/migrated.
User Joanbm
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4 votes

Answer:

Human Migration

I believe! ♥♥

User Tuff
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