Answer:
Edward Jenner gave the first inoculation to a boy in England to help him not get smallpox.
Explanation:
in 1796, when physician Edward Jenner inoculated a young boy in England and successfully prevented him from getting smallpox.
<span>(substitute dollars for bullets) policy of using American troops to advance the interests of the American .</span>
In Puerto Rico it was useful, in Cuba not so much. Cubans perceived the outcome as occupation and didn't want to have United States occupation in their country. Puerto-Ricans had a form of a civilian government with independence and Puerto-rican citizenship but the country belonged to US.