The guy and his brother who installed seamless gutters on my old house came from Serbia. He left with his brother when he was a little kid. First they moved to Germany. Where they learned metal fabrication. Now they have a very successful company in NH installing gutters and standing seam metal roofing.
I met a guy like that - went to Germany first, learned amazing wood working skills.
Told me taxes were too high and regulations were crippling to run a biz. Moved here.