It happened as soon as Og sent his wife across town to Bog's cave,
to ask how many chickens Bog would trade for eight rabbits.
need and invention
The need for dependable fast transportation of people and cargo.
There was an invention of the assembly line.
There was an invention of the assembly line.
The telegraph lead to the invention of the telephone which then lead to mobile phones which are commonly used
yes it did
the invention of the printing press
toilet paper
toilet
Wilbur and Orville Wright's invention led to bad food, surly customer service employees and the need to take off your shoes when you go through security.
The microscope lead to a better understanding of cells.
Start by reading Invent Help online. It will give you all the details you will need to make sure you are ready to start selling your invention. Also once you have done everything you need to do it will lead you in the right direction to start selling your product.