Final answer:
The Old Kingdom's political system was based on a centralized monarchy with the pharaoh as the living god ruler. The king had absolute power and was responsible for maintaining order in society. He led the army and mobilized the people for infrastructure projects.
Step-by-step explanation:
The Old Kingdom's political system was based on a centralized monarchy with the pharaoh as the supreme ruler. The king had absolute power and was considered a living god. He ruled over the political, administrative, and judicial systems, and was responsible for maintaining order in society. The pharaoh also led the army in battles and mobilized the aristocracy and ordinary subjects for large-scale infrastructure projects like the construction of pyramids.