What architectural element(s) posed the greatest compositional challenge for sculptors of greek temple decoration?

Which artist is often considered the leader of the hudson river school and poignantly set up contrast between the cultivated east and the wild west in the united states?

Which baroque artist from a protestant country did not produce work for the catholic church? a. michelangelo b. rembrandt van rijn c. peter paul rubens

I’m a paragraph of no less than 125 words, explain the single most important factor involved in advancing american classical music in the twentieth century.