- In 1955, Jonas Salk invented the first polio vaccine.
- In the Us, 77% of households purchased their first TV.
- The Mid-Atlantic Ridge, the longest mountain range in the world, located along the floor of the Atlantic Ocean was discovered but Bruce C. Heezen.
- Popular board games were Candyland (1949) and Chutes and Ladders (1955)
So, when were TV's actually invented? If 77% of the households bought their first TV in the 1950's did others buy theirs in the 1940's or the 1960's???
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