How is the rosetta stone key to modern-day understanding of ancient egypt?

The main way in which the Rosetta Stone acted as a key to modern-day understanding of ancient Egypt is that it allowed for the translation of Ancient Egyptian hieroglyphs, through Ancient Greek. 

“destroyers for bases agreement in the destroyers for bases agreement between the united states and the united kingdom on september 2, 1940, fifty caldwell , wickes, and clemson class us navy destroyers were transferred to the toyalbnavy from the united states navy in exchange for land rights on british possessions.” i hope this you .