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"Life expectancy at birth takes account of infant mortality"

Era Life expectancy at birth in years

Pre-Columbian Southern United States 25–30

Paleolithic 33

Neolithic 20 to 33

Medieval Islamic world 35+

Late medieval English peerage 30

Early modern England[19] 33–40 34 years for males in the 18th century.[33]

Early 19th-century England 40

Classical Rome 20 to 30

Classical Greece 25to 28

Bronze Age and Iron Age 26

2017 world average 72.2

1950 world average 48

1900 world average 31