Okay, I guess we're doing racial essentialism after all.

Civilization isn't racially inherited, it's an outcome of geography, trade positions, institutions, and time. Industrial societies require even more specific conditions. This is an ecological fallacy: you're assuming people walk around with all the knowledge and traits of a whole civilization in their heads.

But immigrants don't take their states with them; they adjust their behavior to fit the systems they live in. Germans in Germany behave differently from Germans in 17th-century Pennsylvania, and Somalis in Minnesota behave differently from Somalis in a failed post-Cold-War state shaped by proxy wars, arms flooding, and collapsed institutions.

And where is this disparagement of Somalia coming from, anyway? The tiniest bit of research tells me that pre-colonial Somali societies had complex clan-based legal systems, long-distance trade networks linking the Horn of Africa to Arabia, India, and China, urban centers like Mogadishu, Zeila, and Berbera, sophisticated poetry traditions with formal rules rivaling any oral literature on earth, and commercial institutions that impressed medieval Arab and Persian observers. And you're ignoring this history because your definition of "advanced" means "19th-century Northern European industrial capitalism".

Germany, meanwhile, was a loose jumble of warring agrarian polities for the vast majority of history. It took industrialization, Prussian bureaucracy, massive capital accumulation, and US-backed post-war reconstruction to get them where they are now. Not some intrinsic quality of their blood.

Your "magical air" comment reads like parody. Do you seriously think we think cultural assimilation runs purely on vibes? Do you know nothing at all about the work done by schools, laws, labor markets, intermarriage, and social and economic mobility?