The reign of Djer was characterized by further developments in foreign policy, including expeditions into Nubia, Libya and Sinai.

He also set the economic and religious organization of the country, building a a palace at Memphis and a tomb for himself at Abydos, where he may even have been the historical prototype of Osiris.

Two breat tombs belonging to Djer were found at Abydos and Sakkara. For more reason, the ancient Egyptians in a later period thought that Djer’s tomb at Abydos was the tomb of Osiris, they performed pilgrimage to it and presented offerings until it was assured that it is the tomb of Djer by the discoveries of Amelineau.

He was buried along with the rest of his court, although this doesn’t necessarily mean, that his courtiers were obliged to die violently to accompany their sovereign into the grave. However, this was the first case of the Pharaoh’s recognition of the funerary needs of his subordinates. Judging from the funerary furniture in the private tombs of his contemporaries, the reign of Djer was the time of great prosperity.

Djer continued Hor-Aha’s wars against the Nubians and established his rule as far up river as the second cataract. This important event is engraved on a sandstone slab which was found on Gebel Sheikh Suliman, about 11 km south of Wadi Halfa. This slab has been cut and transferred to Khartoum where it is now in the garden of the new museum. This shows that the kings of the 1st dynasty were interested to secure the southern borders of Egypt and to invade the areas to the south of the first cataract for the movement of the commerce with Sudan.

Recent excavations at Sakkara have brought to light a large tomb belonging to Her-Neith who might have been his wife.