Which is really only used in the americas. Europe/Asia doesn’t use it, except in specific circumstances where the child wouldn’t be eligible for citizenship elsewhere. But even that is only due to treaties set up to prevent stateless people. If the child would have citizenship elsewhere (like in America), the European/asian country would tell them to apply there instead.
https://en.m.wikipedia.org/wiki/Jus_soli
Which is really only used in the americas. Europe/Asia doesn’t use it, except in specific circumstances where the child wouldn’t be eligible for citizenship elsewhere. But even that is only due to treaties set up to prevent stateless people. If the child would have citizenship elsewhere (like in America), the European/asian country would tell them to apply there instead.