Comment by light_hue_1

In some countries it is automatic in others it is not.

Say one of your parents is a citizen of some other country.

If they're Canadian, you're a Canadian citizen. Period. The process is to get your documents that prove it. You don't apply for citizenship, you apply for proof.

In many European countries you are not a citizen. The process is to become one by descent. You apply for citizenship.

Very different.