Acquiring Polish citizenship by the power of law
Polish citizenship is obtained by a minor child by the power of law, if:
1) at least one of the parents has Polish citizenship at the time of the birth of the child (the right of blood), or
2) was born on the territory of Poland and their parents are unknown, do not have any citizenship or their citizenship is undefined (the law of the land).
A child acquires Polish citizenship if it has been found in Poland and its parents are unknown.
If a minor foreigner, before reaching the age of 16, was adopted by a person or people having Polish citizenship, it is assumed that the foreigner acquired Polish citizenship on the day of birth.