You will be WELCOME in Australia,the most Multi Cultural of all Nations
Not true, actually, the United States is one of the most, if not the most Multi-Cultural of all Nations.
Ethnic groups English 25.9%, Australian 25.4%, Irish 7.5%, Scottish 6.4%, Italian 3.3%, German 3.2%, Chinese 3.1%, Indian 1.4%, Greek 1.4%, Dutch 1.2%, other 15.8% (includes Australian aboriginal .5%), unspecified 5.4%
note: data represent self-identified ancestry, over a third of respondents reported two ancestries (2011 est.)
Australia Demographics Profile 2018
Not sure how one would go about measuring what's "most multicultural" but I'd put Brazil high on such a list for sure.