When king menes united the kingdoms of upper and lower egypt by establishing a succession of rulers from the same family he found the first egyptian

He found the first Egyptian Dynasty.

Dynastic rule is when a group of people, commonly a family, rules over a country and when the king dies his son or daughter becomes the next king or queen and it goes like that forever unless something groundbreaking happens like a revolution. Dynastic rule became common form of rule up until the modern era.