The jarod Diamond viedo

So we are watching the Jarod Diamond guns germs and steel. The viedo is about why some ciztions advants and other didn't. We first look at the people who live in the forest of Papua new Guiena That have been lifing the same why for thousands of years. And why didn't they advents like most of the world. Jarod said that it all goes back thousands of when people where hunter and gathers. And over time they became farms and grew wheat cause they had good land.