Turkey has never been homogenous, its east is Kurdish, places like Urfa/Şanlıurfa is majority arab people, and there are a significant population of Arabs in Hatay. Hell if you want to go further, a good chunk of "Turks" are really muslim Balkan people and Georgian descent or circassians, who assimilated to the dominant social culture, with the exception of people from other confessional communities who b/c they were a different religion hung on to their more distinct identities. I would wager there is very little of the population that is actually of the same stock as central asians. It used to be even more mixed in Ottoman times. homogeneity is what is artificial, not the "natural" state of things when looking at things historically.
You understand that America has a history of absorbing migratory waves every few decades right? the entire identity of the American is built around the immigrant, the original WASPs that immigrated to this continent are a minority, they were followed by Irish peasant migrants escaping the famine in Ireland. Followed by the Germans and then Sicilian peasants from Italy and the eastern bloc(poles, eastern europeans, greeks, etc). Post 1950s we have had an influx of asians. Not to mention the millions of Latin American who have been migrating for decades. You will notice if you ever travel to the US, that the difference between cities is astounding, if you were in Boston with the Irish heritage to NY with its Italian heritage(historically its a lot less now, with more hispanics and asians), and the American SouthWest which is very much hispanic, or Atlanta in the south, which is majority African American. Heck 25 years from now, its going to be very different from today. lol
