Does anyone want to be friends?

According to the riddle of the rosetta stone, what problem did both jean-francois champollion and sylvestre de sacy face in their attempts to decipher the writings on the rosetta stone?

It was fifteen minutes before i could work myself up to go and humble myself to a ; but i done it, and i warn’t ever sorry for it afterwards, neither. i didn’t do him no more mean tricks, and i wouldn’t done that one if i’d a knowed it would make him feel that way. in at least one hundred words, describe what central theme in the adventures of huckleberry finn emerges in this excerpt, and how its emergence relates to the social norms of the time.

In the excerpt above, what can be inferred by the statement, "the dillingham had been flung to the breeze during aformer period of prosperity.?