We used letters.
The stone age!!
Prehistory
Bartering.Trade with Gold & Silver primarily. (still do to this day)
Was it gold or did they just trade things for what they wanted.
The Italian invented Chinese food.
they were invented for slavery
They used smoke signals to communicate with one another.
the chinese people
Chinese people
chinese people
Well, the Chinese people have to eat something.
the Chinese
it was invented to help people cool off on hot days
Chinese people have invented online internet banking
It wasn't invented. It developed over centuries of Chinese cooks making dishes, changing them, developing new dishes, etc. As long as there have been Chinese people, there has been Chinese food.
nobody invented it, it comes from the chinese silk worm. the ancient chinese people used to boil the worms and gently unwrap the silk woven around its body.