What made the fortresses built by Ancient Egyptians so impenetrable?

Buhen (Ancient Greek: Βοὥν Bohón)[1] was an ancient Egyptian settlement situated on the West bank of the Nile below (to the North of) the Second Cataract in what is now Northern State, Sudan. It is now submerged in Lake Nubia, Sudan. On the East bank, across the river, there was another ancient settlement, where the town of Wadi Halfa now stands. The earliest mention of Buhen comes from stelae dating to the reign of Senusret I.[2] Buhen is also the earliest known Egyptian settlement in the land of Nubia.[3]

the crusades are one of the most significant events in the history of europe and the middle east.   they were a series of religious wars carried out by christian crusaders from europe during the timeframe of the middle ages.   beginning in 1095 ce, the crusades saw european knights and noblemen travel to the middle east in an attempt to capture the holy land away from muslim people that had controlled the region for the previous centuries.   the term crusade means ‘cross’.   therefore, the europeans that became crusaders viewed themselves as ‘taking up the cross’.   in fact, many of the crusaders wore crosses on their clothing and armor as they made their pilgrimage to the holy land.

explanation:

slim jim pickle bim bang bongo babado