This was mid 1600s, and pretty damn regional impactful. Poland-Lithuania was a major power in Europe at the time, and this was the beginning of them losing their power and ceasing to exist over many wars in the next century. We'd know about the Polish Lithuanian commonwealth and how powerful they were if our history left America 1600-1945 for just one of the 12 years.

I can tell you this. In American public schools we absolutely learned nothing about this, barely anything outside of America. Of what we did learn it was all Ancient, or about the major colonial powers. I know quite a few fully functioning adults who couldn't label all their continents, never mind Sweden or Poland.