The use of chromatic tones. example: in c-major, C# Db D# Eb F# Gb G# AB A# and Bb.
Symbolic proportion is the deliberate emphasis of objects in a work of art based on its importance as a symbol. This can sometimes also mean that in an artwork where symbolic proportion is applied, religious figures tend to be "bigger" or more emphasized compared to any other element a person may see in the piece.
The artist may have used symbolic proportion to emphasize the importance or prominence of Mary and Jesus Christ - this may be relative to any smaller objects around them in the scene.
Answer:
It was written to call for peace during the Vietnam War, and urged people around the world to live in unity. One thing I like about this song is how it can bring different people together as one, as it is a very unifying piece. (hope this helps :)
Explanation: Lennon was asking us to imagine a place where the things that divide us, like religion and possessions, did not exist. He felt that would be a much better place. This song is a strong political message sugarcoated in a beautiful melody.