Answer: rosettastone

AnswerCrossword Clue
ROSETTASTONE

Great find of 1799

ROSETTASTONE

Inscribed basalt tablet

ROSETTASTONE

1799 discovery that made possible the decipherment of Egyptian hieroglyphics

ROSETTASTONE
Key to deciphering Egyptian hieroglyphics
ROSETTASTONE
Important archeological discovery: 1799
ROSETTASTONEKey discovery of 1799
ROSETTASTONETablet of hieroglyphics