Question

why is the discovery of fire termed as one the most important discovery ever

Answer 1

The discovery of fire made the human life more easy and safe.we can't imagine a life without fire.Fire is used in many ways such as:
*source of light
*source of heat
and it is also used in cooking.
It also protects us from animals

Answer 2

Because the discovery of fire let the humans see in the dark . Fire made their meat and vegetables more tastier and with fire they can threaten animals which would kill them.