What was the impact of thr …

The first thing is that due to this discoveries  actually human civilization started.Due to the discoveries of this thing humans started to get civilized  by the discovery of fire they came to know how to cook and that it makes the raw food more tastier and eatable  they also came to know that fire provides us warmth and many more things. whereas the discovery of wheel made humans  aware that by that rolling object they can make something which will help them to carry loads as well as them selves to a certain place which will be less time consuming which will need less hardship too due discovery of wheels has played an important role in developing human life style.and yes due to the discovery of iron  we are able to stay in a well roofed houses and that when we cook our utensils never melts and many more. thus we can say that discovery of fire,wheel and iron had a great impact on human civilization.