premise: Of the once white walls of Memphis, little remains, but it was capital of Egypt until the end of the sixth Dynasty (c. 2200 b.c. ). The two major relics are a monumental statue of Ramses II lying proseate after losing its feet, and an alabaster sphinx dating from 1400 b.c.
hypothesis: Memphis was once the capital of Egypt until the end of the tenth Dynasty, 4500 B.C.