The tune is "Freedom". The melody was composed and recorded by Paul McCartney in light of the September 11 assaults in 2001. McCartney was in New York City at the season of the assaults and saw the occasion while sitting in a plane stopped on the landing area at New York's John F. Kennedy Airport
Primary source would be you doing the research yourself. secondary source would be someone whom you get the studies off of
There were 2 groups of countries the Axis Powers and The Allies, but I would say Germany and The United States were the 2 main countries
The allies were more concerned with punishment and restitution than with peace
