What about Brazil? Millions of Lebanese Muslims and Christians moved there, and have integrated well. So have Europeans, Japanese, and others. In fact, they didn't have to put their Japanese origin citizens into concentration camps during World War Two.

The fascinating part of the USA and Canada is that warring nationalities of Europe could come here and not fight with each other. While their compatriots were fighting brutal wars back in the home countries. The UK, France, Germany, Russia, Poland, Spain etc were involved in wars where over 200 million died over the last 200 years.