Or formed a mafia and murdered people for a living, like the 3rd world Italians? The Irish immigrants were loathed in the USA, and brought a crimewave with them:
So? That was a small portion of the population. Unlike the third world migrants in western Europe of whom there are hordes living in tents, raping women, committing violent acts, stealing, torching cars, causing years long states of emergency, leaving trash everywhere, etc. One merely needs to go on youtube and watch any of the hundreds if not thousands of videos showing how third world migrants behave in w Europe. Now compare that to European migrants like Ukranians in Poland who do none of the above - no they work and assimilate, there are not hundreds of thousands of them collecting benefits, there aren't any ukranians committing terrorist attacks against Europeans, they're not driving cars into crowds, they aren't walking around with flags saying Orthodoxy 4 Poland - no that's because they came to WORK and contribute to the society and not have poles support them and their kids for decades.
What has Poland and Ireland contributed to European civilisation?
Oh where to begin... how about with Curie - considering she is a POLE regardless of where she did her research... Pope John Paul II, Pulaski, Pilsudzki, Chopin - here's a whole list... en.wikipedia.org/wiki/List_of_Polish_people
Major inventions? Sure how about the first moon rover, walkie-talkie, sound film, kerosene lamp, first welded bridge, q-tips, the integraph, pneumatic shock absorbers...
How many inventions are coming out of Somalia? How about Kenya or Afghanistan?
Well I tried to look it up on Wiki but nothing was found.... en.wikipedia.org/wiki/Category:Somali_inventions
Not surprising in the least....
Far, FAR smaller list than Poles - and NO CATEGORY FOR INVENTORS ROFL...
So the arabs of the time were not just centuries, but millennia, ahead of white Europeans.
So what happened? Why did they lose their giant leap ahead of us? Why are most Arab countries third world sh1tholes today? Oh wait I know the answer to that... ISLAM!
All the more reason they should be centuries ahead of Europeans, not behind. Europeans should be migrating by the millions then to the Arab world. But that's obviously not the case.... That's because European society is superior and everyone knows it and that's why every third world wants to come there.