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Period: to
Cold war
- March 12,1947 was the Truman doctrine
- November 9,1989 was the Berlin wall
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Air conditioning
- Many of the central changes in our society after ww2 wouldnt have been possible if ac was not keeping homes and workplaces cool
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Polio vaccine by Dr Jonas salk
- Jonas salk developed the 1st effective polio vaccine in 1952.His vaccine was tested in the Francis field trial when it began it involved approximately 4.000 children,but would grow to eventually involved around 1.8million children across 44 states