Answer:
the improvement in knowledge about medicine
Explanation:
<span>Nomadic and agriculturists </span><span />
At times, it was chaotic because it was so much land to control that the ruler split it into "states", and gave each one to a family member. But, after a while they realized some of the family had more land than others, so they began to fight. The bigger lands conquered the others with their stronger army.
<span>Henry fords production methods affected the number of cars produced by increasing it.</span>