What were turtle ships, and what role did they play in Korean history

Developed and deployed by Korea's brilliant admiral, Yi Sun-sin, the Turtle Ship (known among the Koreans as Geobukseon) was a coastal defense galley; but one possessed of some unique features. First, it was a ship whose sides and deck were covered-over; to protect the crew from missile bombardment.

Explanation:

in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion

the answer is