Final answer:
The periods of political disruption between the major stable kingdoms in ancient Egyptian history are known as the Intermediate Periods, specifically the First Intermediate Period and the Second Intermediate Period, during which times internal strife and lack of centralized control were prevalent.
Step-by-step explanation:
The times of political disruption between the Egyptian kingdoms are known as the Intermediate Periods. Ancient Egyptian history is generally divided into three major periods: the Old Kingdom, the Middle Kingdom, and the New Kingdom. These periods of prosperity and centralized rule were separated by the First Intermediate Period (2200 – 2040 BCE) between the Old and Middle Kingdoms, and the Second Intermediate Period (1720 – 1550 BCE) between the Middle and New Kingdoms. During these Intermediate Periods, the ruling dynasty broke down, regional rulers or outsiders often seized control, and the nation experienced upheaval and instability. Despite this, it's noteworthy that Egypt's overarching historical narrative displays remarkable consistency and longevity, especially when compared to other ancient civilizations.