it means 5000 years before the birth of Christ
The wheel was the earliest of useful inventions. Back dating to 5000 BC. The wheel was used before it was "invented" in the sense that it served many purposes before being given a name.
It is the symbol for the word 'Circa'. It means 'about' when describing a time reference. Therefore C 5000 BC. Would mean around 5000 years before the christian era. Also refered to as the common era. See the related link for more inforamtion.
8100 years = 5000 years before Christ + 3100 years Christian Era.
They began ruling from 2649 BC and they ended in 362 BC before the Greek/Romans came.
sails started being used around 5000 bc
yes
it's the crop crotch
Yes, there was.
Paper. It was invented by the Chinese in around 5000 BC.
5000 bc.
5000 BC