Hello, I am Danny who is going to introduce the paleolithic period to the iron age ; In the paleolithic period, they just breaked the stones or throwed the stones to make some weapons. But, in the neolithic period, they grind the stones so the blade part woud be very sharp and the grip would be smoother than the paleolithic period. In the bronze age, they made daggers with bronzes(metal).That was ore stronger than the stones that they used in the paleolithic period to the neolithic period. Last, in the iron age, they used iron wicth is more stronger than the bronze that they used in the bronze age. Like that, people's brains are getting developting and advancing more and moreso that we could invent other comfortable inventions.

Thank - You