title: The Falling Death Rate and Lengthening of Life.
mesh_terms: D049673:History, 20th Century; D006801:Humans; D008017:Life Expectancy / Q000266:history* / Q000639:trends; D009026:Mortality / Q000266:history* / Q000639:trends; D012499:Sanitation / Q000266:history / Q000639:trends; D014481:United States