2 Elements:
Color is being used in cooperation with Line to make colors "pop" more. Along with this, it provides and organized, yet visually appealing aesthetic to the art piece.
Color in particular, is what separates the work into sections that draw the viewer's eyes in, due to the contrast choices by the artist.
While Line, physically separates the colors, but provides the attractive composition.
(I would answer principles too, but I don't have the time currently;; Hopefully this helps though.)
by using cemetrey and making sure their work is even.
Answer: was said to have written the bulk of the standard chants, according to later legend.
Explanation:
Pope Gregory was one of the most influential popes there ever was and he is credited with pushing the realm of the Christian faith as well as the Papacy to greater heights.
Popular legend credits him with having written the majority of the Gregorian chant which is a body of chants used by the Roman Catholic church. For this reason the chant is named after him. Modern scholars have however come to believe that it is simply an amalgamation of Roman and Gallican chants.