i dont think anybody know for sure but here are some ideas: protecting their countries, hunting i think hunting was the first reason because cavemen had to hunt to survive and they invented clubs...
two chinese people
Spears They did not invent iron they may have found it but the hittikes were the first people to use iron tools and weapons
because someone wanted to!!, oooo, burn that!
Same reason they always invent new weapons - to help them win. Superior weapons go a long way to help win a war. America has ruled the world because of superior fire power.
because he wanted people to have fun
No, there were weapons way before the Roman Empire.
he wanted to make an easier and faster way for people to get around
He didn't really invent weapons however, he did invent musical instruments, hydraulic pumps, reversible crank mechanisms,finned motor shells, and a steam cannon.
he wanted people fro all around the world to see famous people
Leo Szilard
The people of Benin wanted guns because they only had those homemade weapons and they wanted something destructive and powerful.
he invennted it because he wanted to communicate with people