The answer is authenticity. Authenticity in anthropology reflects an object's materiality and if we dig deeper into it, authenticity does not only pertains to the age of the object but also to its age-value. Age-value signifies its past experience and condition like its wear and tear and its decay and disintegration.
The rosetta stone was this piece of stone found that had a piece of a passage on it. however, it wasnt only written in one language. there were about 3 sections of it that were in different languages of the same passage. the biggest break through from discovering this was that it helped people better translate hieroglyphics, which was also one of the languages on it
It actually mean't that the US had should own the lands between the Atlantic and Pacific.