This is over a hundred year old rule and common in "the new world". You can guess why it is common if you think about the phrase I put in quotes. All these countries are composed of immigrants...
Here's a short and incomplete list: USA, Canada, Mexico, Brazil, Argentina, Chile.
The logic is that the culture is what makes you part of the country, not the blood in your veins.
The other side of that logic is that you're not guaranteed citizenship to the country of your parents. It certainly isn't automatic.
200-300 years isn't that old. There are plenty of buildings older than that all across Europe. There are businesses older than that. There are businesses and buildings that were older than that before the US even became a country. The *FALL* of the Roman empire was in ~500AD. It was a true empire even before 0AD, spanning across coastal Europe and northern Africa. It's height being ~100AD.
I'm sorry, the new world still has a few hundred years to go before we can even consider it old. It's not even a pre-teen by the standards. I mean we only discussed Europe. But the pyramids were older to the Romans than the Romans are to us.
Let me repeat for you part of the *FIRST SENTENCE* in my comment
>> common in "the new world"
So
> Nonexistent in Europe
Last I checked, Europe was not "the new world".
> the developed world
Considering that the US and Canada are developed countries, you'll need to rephrase. If you want to make jokes about the US not being a developed world then we'll be forced to make jokes about your lack of literacy and inability to use Google.
Please, for the love of god, just read the comments you're replying to. It's like the absolute bare minimum requirement.
Here's a short and incomplete list: USA, Canada, Mexico, Brazil, Argentina, Chile.
The logic is that the culture is what makes you part of the country, not the blood in your veins.
The other side of that logic is that you're not guaranteed citizenship to the country of your parents. It certainly isn't automatic.