There are techniques that can be used to create rhythm and movements.

What i think is that it adds loudness for preachers/church choirs. it is also able to hold up a lot of weight without pillars. : )) idek tho

Ithink collage romare bearden create emotional affecting images because we was able incorporate the use of crafts such as, craftwork quilts which was something learned by the necessity of making artwork out of whatever materials were available. it allows him to express his belief in the connection between social reality and art. he is able to share his personal experiences as an african-american, from the rural south to the urban north and to paris, through his work. 

That is true. hope it ! : )