In my opinion, the nuclear bomb.
internet
Most would consider the greatest inventions of the 20th century to be the automobile, the personal computer, and plastic.
i heard somewhere that the greatest invention of the 21st century is the internet.
the candy lipstick
The Invention Convention is the worst project ever! Don't ever tell any of your teachers about it cause they might wanna do it and your life will be over. Trust me, WORST PROJECT ON EARTH!
The locomotive
The Steamboat
The worst case of hyperinflation in the 20th century took place in Hungary in 1946.
Radio was not an important invention in the early 20th century. Instead it was developed by Heinrich Hertz in the 18th century. The cotton gin (APEX)
harding
The Steamboat
The Steamboat
The Steamboat
internet
Radio was not an important invention in the early 20th century. Instead it was developed by Heinrich Hertz in the 18th century. The cotton gin (APEX)
No - acrylics were an invention of the mid 20th century.
Worst Crimes of the 20th Century - 1987 V is rated/received certificates of: Australia:MA