>Right, and the present day Syrian Civil War is just an "internal" matter.
Except that the Syrian Civil War is being puppeteered by global powers with weapons supplies and corporations with money. In comparison the Polish state was but a fledgeling, trying to find its own course in the world, troubled by its own political instability (which culminated in Piłsudski's military coup) and definitely not in a position to have any direct involvement in the spartacist revolution. Not to mention the fact that, as I said, Poland was not very keen on communism itself, given that Poland's very existence was threatened from the get go by the soviet union.
>Not saying that, just that there was a reason for Germany to go into Poland to help ethnic Germans
I am not saying that the Polish state did nothing wrong, but I was specifically replying to the idiotic claim which stated, and I quote, that "it was Poland that invaded Germany". For the sake of keeping the goalposts where they are, I will not lump your argument in with the quote.
>For simplicity's sake let keep things to events the occurred in the 20th Century
Why should we? The Polish state was only founded in 1919, so your arbitrary rules restrict us to only the previous 19 years of the 20th century for context, while for some reason keeping the next 55 after the second world war which had no bearing on Polish German relations, and conveniently skips over the final 30 or so years of the 19th century when the German Empire repressed Poles to the greatest extent until of course during the second world war.
If you want to restrict the timescope to 100 years, fine, I agree, but make it more relevant to the context of the conversation, like between 1850 and 1950. That way dirty dealings on both sides can be brought to question, not like what you suggest, which hides the ugly reality of the German treatment of Poles while highlighting the inverse, and making it seem unprovoked.