Answer:
What caused the rise of a political class at the beginning of human society was the need for leadership.
Step-by-step explanation:
When primitive civilizations became sedentary, the creation of communities began where each group became responsible for one activity, one group was responsible for hunting, another for farming, another for creating tools, and so on. From that moment on, communities evolved into larger and more complex communities. This led to the need for a leading group to organize the duties and rights of the communities. From this, the political class was created to manage the population and to oversee its tasks and guarantees.