Iron, Bronze, Copper
Liam Brown.
Metals
Kinchen, James.Inventions and Inventors v.7. Grolier Educational. 2000. 7:21
Iron
Why does Iron matter: iron matters because we need houses, and if we dont have houses and there was a tornado or it hailed we would all be injerd and living under drapes.
How does it effect the world: Iron effects the world because if we did not have iron we would not have sky scrapers and weapons for the military. Also if we did not have iron in the old days we would not have armor and weapons for knights.
Kinchen, James.Inventions and Inventors v.7. Grolier Educational. 2000. 7:23
Copper
Copper smelting appears to have begun before 4,000 B.C. ,and such processes are recorded in ancent Egyptian tomb paintings.
Kinchen, James.Inventions and Inventors v.7. Grolier Educational. 2000. 7:22
Bronze
Why does bronze matter: Bronze matters because if we did not have bronze we would not have armor and tools.
How it effects the world: Bronze is used for lots of things like art, trophies, metals. Also when the stone age was around they could have used it for tools and weapons.
The Bronze age Timeline.February 02, 2014.