(David Hockney) how does he create his photo collages and what is he trying to achieve with his photographic montages/collages <3

Explanation:

Taking numerous Polaroid or 35mm photographs of a scene from a variety of perspectives, Hockney would then arrange the collection of images into a cohesive body, creating an almost Cubist rendering of visual reality. He called these collages and photo montages joiners.

for many centuries, the catholic church has been a patron of the arts. the church has used various scientific methods to maintain its power.

not 100% sure though!