02/02 Guns, Germs, and Steel

Today we continued watched the movie. Guns, Germs, and Steel

• The successful Civilization have 3 common things
• Technology 
• Population
• Job opportunity 
• China - rice
• The Americas - corn, squash and beans
• Africa - millet, yams and sorghum.
• Farming in Papua New Guinea is like 10000 years old