The answer to this question is equity
theory. The equity theory is a theory that was developed by the
behavioral psychologist John Stacey Adams. An equity theory of motivation
focuses on the idea that the people / employees are being motivated because of
the fairness that was being set to them by the company and if the employees
receive an unfair treatment they are being demoralized and un-motivated to do
well in their jobs / tasks.
The answer you want here is Vegetation and climate
hope it helps
The dark age also had the black pleague. That is most likely what cut them out.
