Have you ever wondered who invented the calculator? Or what the first ever map of the world was made of? Or how a computer works? Here is an entertaining and fact-packed introduction to the great inventors of the world and their inventions. Follow the lives and work of over 50 major innovators as you set off on a journ Beautiful Feet Books resource: https://www.bfbooks.com/products/the-picture-history-of-great-inventors