Great documentary: "Guns, Germs, and Steel"
This docu asks the question "Why did some civilizations flourish while others are still stuck in the iron age?" The answer:
- Access to Protein. Because protein is calorie dense, access to protein allows people to spend less time eating and more time developing other technologies. Cultures with little or no protein spend more time gardening and eating to get the calories they need.
- Access to steel. Allows a culture to develop weapons to defend against marauders, and develop better tools.
- Germs. Exposure to many germ vectors allows the immunity of a culture to build up and withstand attacks by new germs. Because the American Indians were so isolated on the American continent, when the white man came over with his new germs, the indian had no immunity and were virtually wiped out.
Great documentary from National Geographic and Netflix.