What is the rosetta stone and what purpose does it have?

The Rosetta Stone is one of the most important objects in the British Museum as it holds the key to understanding Egyptian hieroglyphs a script made up of small pictures that was used originally in ancient Egypt for religious texts.

Explanation:

A relic

Explanation:

The rosetta stone was a tablet that helped decipher the egyptian language

if you tell me the video, i may be able to answer your question.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.