The strength and advancement of the Old Kingdom's central government is that it constructed great monuments.
Explanation:
The period from 2575-2150 BC is known as the period of "Old Kingdom" in Ancient Egypt. During this period Egypt had a strong central government and a prosperous economy. The monuments and pyramids are the famous constructions of Old Kingdom.
The pyramids at Giza, was built during the old kingdom. This was said to be the great strength and advancement of the old kingdom’s central government.
High civilization was noticed during the old kingdom period. Old kingdom is also known as 'Age of the Pyramids’.