Looks at a familiar product that has radically changed the world we live in.Each title in this series examines what life was like before the invention andat how... » 

Looks at a familiar product that has radically changed the world we live in.Each title in this series examines what life was like before the invention andat how life has changed since. It features text and photographs that show majorevents in chronological order and include world maps to show where significantdevelopments took place. «