The internal combustion engine was one of the great inventions of the early 20th century, and the Computer of the latter part. But other things also count such as antibiotics. None are solely of US origin.
it's the telephone
Benjamin Franklin
there were many, electricity, phones and cars
Probably either the Louisiana purchase for 12 million dollars, or buying Alaska from the Russians for 2 cents an acre
The nuclear bomb was probably the most important invention in 1945
electrisity
No, the Model T was not the first automobile invented in the first place. The first practical automobile was invented by Karl Benz in Germany in 1885 and could be listed as the greatest. The worlds greatest invention is debatable and lots of people have lots of lists of the greatest. Here is my list.Printing PressTelephoneElectric Light BulbCotton GinAutomobileTelevisionCameraSewing MachineSteam EngineComputer
it's the telephone
The greatest invention ever built by mankind was probably the electric wire system that allowed us to invent further technology like computers.
his greatest invention was the steam engine
The duration of The Greatest Canadian Invention is 2 hours.
no it is not
March on Washington
The invention of the Jet Engine. The invention, development, of Radar. The use of the Atomic Bomb. The defeat of the Nazis. The greatest fight against Tyrrany in History.
His greatest invention was either dynamite or the Nobel Prize. Mainly towards this day it is the Nobel Prize.
Antibiotics.
the ps3