These people are trying to find food and trying to survive from these wild animals that are really dangers there also trying to get food for there family's so they can stay alive and they also try to get water so they don't die.
People were saying why are we killing animals when we can tame them and keep them we can get milk from cows and sheep and we can get food from them and we can keep them as our pets we can also grow fruit trees and we can make food out of the fruit that we grew. So they did that and that help them a lot more.
people started making there own homes as they were growing little farms, they have also been taming animals like cows, horses, pigs, dogs and many more animals. The houses that they make are really good. They have to fine a really good place to build houses and there had to be water really close to them because they also need water to survive. So that's why they need a perfect spot for there homes and they might stay for a while to. It also depends on when its time for them to move again.