Based on the information in "Edward Jenner and the History of Smallpox and Vaccination," how does the author support the claim that the slave trade played a role in the spread of smallpox? (A)by explaining how smallpox was brought to America

(B)by describing how smallpox was used as a weapon in America

(C)by suggesting that the disease existed wherever enslaved people traveled

(D)by discussing the presence of the disease where enslaved people originated

(D)by discussing the presence of the disease where enslaved people originated

Explanation:

The text discusses that smallpox originated in agricultural settlements in Africa. What can establish a connection with the slave trade, since during this historical period it was common for Europeans to go to Africa to buy slaves that would be taken to America. In addition, people were brought from Africa to America all the time, which may justify the spread of the disease on the American and European continents.

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