What practical problems have been solved between the late 18th century and late 20th century?
by 
Ryan Smith
ANSWERS: 3
-
Safe drinking water Hot water you don't have to haul from outside, heat on the fire, then haul to the bathtub.
-
We discovered how to pack 2 days worth of calories into one burger.
-
Cushioning occupants from hitting hard objects in car crashes.
RELATED QUESTIONS
Copyright 2023, Wired Ivy, LLC