a bike
laptop portability is the most important invention
Shortly after the invention of the chain-driven "safety bike".
Phonograph
The compass was an important invention because people knew where they were going !
The wheel invention
the inventor of the world's fastest bike with US gear combiations
the most important invention was the plow
An invention is important due to its expressive creativity point and unique style of idea. An invention can be very useful once created or formed.
Why is Henry Bessemer's invention important?
The invention of gunpower :)
1. the invention of computers 2. the invention of human kind 3. the invention of inventing!