1 the point of this is to have world peace. It was written because he believed that we should all be working together to be happy.
2. One thing I like about this song is the pace of the song, I think the steady pace it has gives me the chance to describe what I feel and it also helps others hear what I have to say.
I think they adopted Corinthian order, for this type of orders can be seen on many cathedrals around Europe including those in France, Malta (Valletta), etc.