It is my understamding, and you need to verify this for yourself, that I do not need to register a copyright on my photographs. A copyright happens when the photograph is taken.
My only point, and you need to verify this for yourself, is I cannot copyright something that is already copyrighted.
I cannot speak for anyone else, what may be true in your country, and certainly not what you imagine is true.
As for my last post, I was not kidding. I actually did cut/paste that item. The text cut/pasted is not mine, just as I said. I really do think there are about 194 countries in the world (no kidding).
A copyright in the US may be honored in country A, and I have no opinion or idea whether a copyright in country A will be honored anywhere, even in country A.
It is also my understanding, and you will need to verify this for yourself and the country of your interest, that prosecuting copyright infringement is a civil, not criminal, matter and not prosecuted by the government. You have to take care of your own copyright and defend yourself. It is also my opinion, and yours may be different, that the impoverished of third world countries rarely try to make money by stealing copyrighted photos.