The "former colonies" want a better life so the Algerians want to live in France, the Jamaicans want to live in Britain and so on.
SOME European countries did little or no colonizing, SO the WERE no "former" colonists so some European countries. I don't think that the Scandinavians, Germans or Swiss did much colonizing by the sword back in those days of the European colonization.
One side note: the Italians were in Libya for some time. The result was that Moamar Khadafi had BEAUTIFUL Gucci scarves around his wretched neck. He dressed a la italiano. That was the ONLY even remotely positive think about him.
I suspect that you're unfamiliar with the workings of the European Union.As you probably know there are at least several EU countries that have huge moslem populations...Britain,France and the Netherlands being just three.What you seem to have forgotten is that being a citizen of an EU country...or being officially "settled" in one...means that you can travel freely to any other country just a US citizen can travel to...and settle in...any of the 50 states or DC.So while Italy may not have many moslems *living* there if some moslem scumbag in Saudi issues a "fatwa" saying that this woman must die a scumbag disciple in Britain,for example,can hop a plane to Rome and three hours later she's had her throat slit.