Truth be told, if it wasn't for the contributions of Europeans (all Europeans), North America (what's known as the US of A) would still be a backwater forest. Thats NOT an insult to anyone else. Its just a truth thats hard for some people to swallow.

Irish, Germans, Jews, Italians, Polish, French, etc., etc., The Chinese people too for that matter. If NOT for these immigrants what would it be?

They developed the entire country and made arguably it the greatest nation in the world.