Answer:
In order for the scholars to know whether the three languages actually mean the same thing. It allowed them to fully understand the Egyptian hieroglyphics and how these were written.
Explanation:
The question is related to the popular "Rosetta Stone," which is preserved in the British Museum these days. By the end of the 4th century, hieroglyphics was no longer being used, so it was hard for the scholars to understand this ancient Egyptian kind of writing.
Luckily, in the 19th century, the scholars thought about using the Greek inscriptions in order to decipher the other languages. Such discovery became important in providing people a knowledge about hieroglyphics.
