How does this account compare to the other documents? in particular the american cyclopaedia

Both the American Cyclopaedia and this excerpt from Richer of Rheims Historie de France speak about the Dark Ages period (5th Century-15th Century). More specifically, both texts deal with the appearance of the revival of learning as a response to the barbarian supremacy. However, the excerpt uses a more positive and friendly tone.

the use of electrical signals that transit messages is know as