Who would intentionally bring muslims into a non-muslim country?
“Tribalism” is an expression of an abjectly primitive and backward world view (if that's what it can be called). In order for this mentality to function and endure, gender apartheid must be rigorously maintained. With fully 50% of the people sitting at home with a sheet over their heads and excluded from dicision-making, Muslim countries will ALWAYS be backward, violent and impoverished.
Incessant warfare is built into that kind of thinking and assimilation of any kind or at any level will be impossible.