Charles banks wilson was an artist who gave us a portrait of a warrior.

Native American Warrior. Charles Banks Wilson is best known for his Lithographs that often portray the American West in great detail. Having been born in Arkansas and raised in Oklahoma, much of his works are iconic representations of Native Americans, Cowboys, and the general concept of the "Old West".

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.

The answer here would be "work ethic."