- The Soviet Union: Now there are a ton of countries such as Russia, Kazakhstan, Turkmenistan
and a few other -istan
- Czechoslovakia, Yugoslavia: Now we have Czech Republic, Slovakia, Croatia, Bosnia, Serbia and others
- The solar system had 9 planets. Pluto is no longer a planet
- Persons in the United States whose ancestry traces to Africa were called Negros and later Black for a few years
- Electrical outlets: never had polarity. Two pin plugs could be plugged in any way you like. And I think 2 pin outlets were common (without the ground wire).