Note that life expectancy is an average, meaning that a number as low as 40 years usually means a high infant mortality rate. See: http://en.wikipedia.org/wiki/

Note that life expectancy is an average, meaning that a number as low as 40 years usually means a high infant mortality rate. See: http://en.wikipedia.org/wiki/Life_expectancy#Interpretation_of_life_expectancy http://en.wikipedia.org/wiki/Life_expectancy#Interpretation_...