Support principles help to establish what in a composition

The byzantine style introduced what what into the history of art ?

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

& hurry! i need this done by 3: 00 pm! changes in artists' art brought about by the inventions of automobiles and trains shows that society influences what? brainliest whoever gets it correct!