Answer:
Nobody knew how to read Ancient Egyptian when it was found. The Rosetta Stone has become a very useful piece of evidence, since the inscriptions say the same thing in three different languages. It took over two months to discover what the Rosetta Stone had to say, through the efforts of several people. A piece of rock that was written on and made to honor an Egyptian Pharaoh is the Rosetta Stone. In fact, the Rosetta stone today has many places and some are moved today, mostly because it makes it harder to sit and be robbed. Other museums have papers and other records that explain what the Rosetta Stone is like, since there is only one Rosetta Stone. The Rosetta Stone was also discovered on 15 July 1799 during the digging of the foundations of an addition to a fort near the town of Rashid (Rosetta) in the Nile Delta. Apparently, they had built it into a very old wall. Pierre-François Bouchard, the officer in charge, understood the significance of the discovery.
Psychological suspense is usually established through a turning point in the plot, conflict, pace, tragedy, raised stakes, or complications. Consider the tone of the passage and how it reflects pace. Perhaps the passage is emphasizing madness or a conflict that has recently taken place. Or perhaps the main character is under a great deal of psychological stress due to a complication or tragedy. Hope this helps.
Economical. This has the most positive connotation out of all of the options listed here.
"Inferior" implies that the quality is lesser than other potential materials that could have been used.
"Second-rate" and "Sub-standard" also imply the same message.
"Economical" has the most positive connotation, because it implies that the materials are monetarily cheap but does not really imply anything about the QUALITY of the cheap material.