Infant mortality is probably the biggest factor in "under 5 years old" mortality rate. However, even if you look at children mortality overall, it follows a sim

Infant mortality is probably the biggest factor in "under 5 years old" mortality rate. However, even if you look at children mortality overall, it follows a similar trend: https://ourworldindata.org/grapher/child-mortality?tab=chart&time=1933..2016&country=USA https://ourworldindata.org/grapher/child-mortality?tab=chart...