<span>The structures of the limbic system </span>jointly control a variety of basic functions relating to emotions and self-preservation such as eating, aggression, and reproduction <span> Limbic system includes various parts of brain such as: </span><span>amygdala, hippocampus, thalamus, hypothalamus, basal ganglia, and cingulate gyrus. The functional combinations between these parts make human able to function as a whole</span>
They were nomadic societies and when food and water would become scarce, many would split and go different ways based on where they believed they should go to find more.
