But there are so many interesting, less well-known civilizations — here's an admittedly biased selection of some of them and why they are not to be forgotten.
Everyone knows of some ancient civilizations, either from world history classes in high school, from popular books or films, or from television specials on the Discovery or History Channels, the BBC or Public Broadcasting's NOVA. Ancient Rome, Ancient Greece, Ancient Egypt, all of these are covered again and again in our books, magazines, and television shows. But there are so many interesting, less well-known civilizations — here's an admittedly biased selection of some of them and why they are not to be forgotten.