Law / Poland's citizenship by descent question. Polish great-great grandfather arrived in the USA as a kid. [76]

Thank you all so much for so many thoughtful replies. I see some clear answers that say no and a couple of maybes. So I appreciate that. There is a lot of experience here.

@PTK Can you explain this further? - Other than possibly ethnic Germans living outside the borders of the Third Republic at its creation, those obligations haven't changed over time.

My family should be German, so this might affect me.

I can easily find all of my family's US birth, marriage and death records. Although, I am not excited by the apostle requirement.
If I decide to pursue this further I think I would need my great grandmother's birth record from Poland. I am an amateur genealogist, so I enjoy the hunt for documents and records. She was born in Lipno, Plock Poland in 1888. Her mother died there around 1935, so I would want to find both records. Any suggestions for how to get those records?

Additionally, since my great grandmother was never a US citizen, I wonder if there was any type of document that she would have needed in the US that was issued by Poland? Might she have had some sort of identification card?

One statement that I found earlier in this posting is - Citizenship was assigned on the basis of the 1920 citizenship law, which said that anyone born on the territory of what had just become Poland, and had not taken citizenship elsewhere, was entitled to Polish citizenship. I'm not sure if that is true, but if it is, than that might be why my great grandmother registered with the US as a Polish citizen. If this isn't true, would that make her stateless?

Law / Poland's citizenship by descent question. Polish great-great grandfather arrived in the USA as a kid. [76]

My great grandfather was born in Wilkow, Poland in 1887 and my great grandmother was born in Lipno, Poland in 1888. He came to the US in 1905 and she came to the US in 1906 and they married in 1908. My grandfather was born in 1908. My father was born in 1935. I was born in 1962.

My great grandfather was gone by 1910 and my great grandmother remarried in 1911. She lived the rest of her life in the US. In 1940 she registered with the US as an alien, as a citizen/subject of Poland and maintained that status until her death in 1981. I have a copy of her US alien registration form but no birth certificate or documents from Poland. Her second husband was naturalized as a US citizen in 1945, however, he never adopted my grandfather and my grandfather never served in temilitary.

I have been reading the Polish citizenship laws and think that because my great grandmother never naturalized in the US and never renounced her Polish citizenship and my father and grandfather did not renounce their Polish citizenship that I would have an unbroken line of citizenship. My grandfather, who was born in 1908, was 10 years old in 1918, so he was a minor and significantly younger than the age of 21 when Poland became independent. Thanks to anyone who can give me some advice on whether I may qualify as a Polish citizen.