Unas ruled for about 30 years and approximately during this time Egypt prospered and traded with Byblos and Nubia. Unas belonged among significant builders and let construct temples and palaces from Elephantine to Saqqara. People remembered him in good undoubtedly, because he was deified later. His chantry temple in northern Saqqara was thoroughly reconstucted 1,000 years later under Ramesses II rule.
The weakening of the power of Pharaoh
A gradual process of ruler power emasculation continued under his rule, on the other hand the number of officers and priests increased. Also the economical situation worsened in the kingdom. Unas visited Elephantine, where he met the headmen of Nubian tribes.
We know few Unas' sons, but neither of them came to the throne after their father's death. The heir apparent of the throne likely died, when Unas was still alive. However, the change of dynasties was apparently made without difficulties. A number of officers from the time of Unas' rule stayed on their places even under Teti's rule, who was his successor. Teti was the first king of 6th dynasty and he married one of Unas' daughters.
Pyramid of Unas