Which artist invented the collage art form, and in what year? what are artists doing, or what principle are they following, when they create a collage?

The term collage was coined by both  georges braque  and  pablo picasso  in the beginning of the 20th century when collage became a distinctive part of modern art.hope this sorry if there wasn't more of an explanation!

The artist is fra angelico

,mhngcbfvdsxdfgrthjk,jmhgfds