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Jenner 's vaccine ... the major weaponto preventsmallpox around the world
The use of these vaccines was soon usedto preventsmallpox around the world
Routine immunizationto preventsmallpox in America
Europeans 'discovered' the New World , epidemics , including smallpox
Introduced writing systems to the Quechua , Nahuatl and Guarani peoplesmay have contributedto their expansion.[citation needed ] Smallpox Epidemics in the New World
these diseasesdid causeepidemics in the New World
some important successes in its seven and a half decades , including in global health , ... the WHOledthe world in eradicating smallpox
activitieswould have causedsmallpox to spread around the world
It has been rightly said by WHO Executive Directorledthe world in eradicating smallpox
the Americasdiscoveredthe Americas
to ... in some sense ... even caused ... the Little Ice Agemight have contributedto ... in some sense ... even caused ... the Little Ice Age
the Great Dying resulting in the deaths of 90 % of the Native American populationcausedthe Great Dying resulting in the deaths of 90 % of the Native American population
likelyoriginatedlikely
the challenges(passive) caused bythe challenges
issuescausedissues
the world populationhas causedthe world population
the greatest loss of life known to historycausedthe greatest loss of life known to history
around 1500 bc in ancient egypt by 430 bcto have originatedaround 1500 bc in ancient egypt by 430 bc
millions of deaths of the indigenous populationscausingmillions of deaths of the indigenous populations