The approximate difference in life expectancy at birth for people born in rich nations versus people born in poor ones is 18 percent.
The phrase "life expectancy" relates to how many years one can anticipate living. By definition, life expectancy is based on an estimation of the typical age at death for members of a certain population group.
According to the statistical average, a person's life expectancy is the number of years they can anticipate to live. The average lifespan varies geographically and historically. For instance, life expectancy was 26 years in the Bronze age whereas it was 67 years in 2010.
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