Which does the author mean by " nature had to kindle all the fires, for man by his own effort was unable to produce a spark

The gregorian chant was a major cultural milestone in the middle ages. it was one of the first codified forms of music meant to be played as written, where previously it was difficult to mass-produce and disseminate any music. what's more, these chants were also some of the first examples of musical notation: the notes and bars of today's music sheets are a reflection of centuries of evolution beginning with these chants. it became official throughout the entirety of the catholic church, meaning that nearly all of europe followed this musical notation and styling.

Well some people like the chat but it dissent effect others

It renewed the spirit of exploration and research among western europeans, a spirit that moves the world now more than ever.