The Second Intermediate Period marks a period when Ancient Egypt fell into disarray for a second time, between the end of the Middle Kingdom and the start of the New Kingdom. It is best known as the period when the Hyksos made their appearance in Egypt and whose reign comprised the fifteenth and sixteenth dynasties.
The Hyksos were an Asiatic people who took over the eastern Nile Delta during the twelfth dynasty, initiating the Second Intermediate Period of ancient Egypt.
The Hyksos first appeared in Egypt during the eleventh dynasty, began their climb to power in the thirteenth dynasty, and came out of the second intermediate period in control of Avaris and the Delta. By the fifteenth dynasty, they ruled Lower Egypt, and at the end of the seventeenth dynasty, they were expelled.