to kill off people that they were fighting against....
Insoles
It was invented in the 20th century
no. it was the... can anyone add plz!! The list I found said it was the Radio that was the best invention of the 20th century. Put it in related links.
The internet was invented in the 20th century, specifically in the late 1960s with the development of ARPANET, the precursor to the modern internet.
In my opinion, the nuclear bomb.
20th century
in da 20th century.
William Hoover invented the vacuum cleaner in the early 20th century.
your face it invented got it
The touch screen wasn't invented in the 21st century, it was invented in 1971, which is the 20th century.
The assembly line, the automobile, man-made satellites, the Hubble telescope, manned space shuttles, nuclear weapons, radio, television, computers, the internet, football - these are all examples of great 20th century inventions.
The primary weapons of Egypt, for the 20th century, are imports from the former Soviet Union and Communist China.