Soccer was a slang term derived from the “soc” in association football. Contrary to popular belief, the term soccer was used just as much as football in England up until the 1980s when the North American Soccer League (NASL) gained popularity. Since nobody in Europe took the NASL seriously, it became improper and developed into a tounge in cheek term to describe American association football.
Because Americans believe they should rule the world. So they will try to do things the American way.
Half of the world’s problems will disappear if only Americans realise they cannot dictate what they want. Football included.