History, 30.01.2020 10:49 alexiasvizcaino
Based on the information in "edward jenner and the history of smallpox and vaccination,” which sentence best explains how the twentieth century is significant in the historical timeline of smallpox?
it represents an improvement of the vaccination.
it represents a decrease in disease mortality.
it represents a need for revaccination.
it represents the end of the disease.
Answers: 3
History, 21.06.2019 18:40
Which of the following inventions most directly allowed ancient farmers to produce a surplus ?
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According to the map, most mining occurs in the. part of the state
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Based on the information in "edward jenner and the history of smallpox and vaccination,” which sente...
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