Around 1931 the average life expectancy at birth for the whole world passed 40 years. For most of history it had stayed around 30, mainly because so many children died young. Vaccines, antibiotics, clean water, better food and medical care changed that within a few generations. It took place around 1931.
Before and after
- 1931Big Bang theory proposed
- 1931Founding of Porsche
- 1931Construction of White Sea – Baltic Canal
- 1931Kurt Godel proves his incompleteness theorems
- c. 1931Global life expectancy reaches 40 years
- 16 January 1931Birth of Johannes Rau
- 1 February 1931Birth of Boris Yeltsin
- 4 February 1931Birth of Isabel Martínez de Perón
- 8 February 1931Birth of James Dean
More in Society, economy & sport
- 16 October 1923Founding of The Walt Disney Company
- 20 July 1924Founding of FIDE
- from 3 August 1936 to 9 August 1936Jesse Owens wins four gold medals in Berlin
- November 1938Kristallnacht
- 1940Katyn massacre
- 1941Rise of Vietnamese Independence League
The era
This moment belongs to the Modern era (1914 CE to 1945 CE), world wars and a changing world. You can also browse everything in the 20th century.