Normally, when people find out that a term is very offensive in another country, they stop using it out of respect for those who could be offended by it.
I wouldn't refer to Aboriginal Australians as Abos, even if it is 'just another abbreviation' that means nothing in England.
That was the only point I was making.
There’s a dozen or more abusive terms for Aborigines, Abo is probably less offensive than most
http://www.rsdb.org/race/australian_aboriginals