Answer:
Gen X
Explanation:
Gen X is the only generation that is old enough to have worked in a professional field for a decade or more and now wants to return to school and receive additional training and expertise.
Mesopotamia introduced a more sedentary way of life by means of agriculture and animal husbandry. So for example, instead of the nomadic way of life, which is/was going hunting, foraging, and/or fishing.
Hopefully this is right and helpful. Good luck!
Nicolaus Copernicus and Galileo Galilei