But many experts would say that this rather small piece of rock was more valuable than any of the larger objects in the room.

In this line of text, the author makes his viewpoint clear about the

reign of Pharaoh Amenophis III who discovered the Rosetta Stone.
reign of Pharaoh Ramesses II who discovered the Rosetta Stone.
Rosetta Stone’s use of hieroglyphs to describe life in ancient Egypt.
Rosetta Stone’s use of hieroglyphs to explain weather patterns.