No you didn't, you slaved most people to your country
No. Not even close. Yes, slaves were sold here, but many people came here to escape the crowns in Europe.
As for "Polish" you are talking about Nationality, while I am refering to ethnicity. It's just part of American Culture that you need to deal with. We just do that kind of thing here. We use our last names and we identify ourselves ethnically with whatever kind of ethnicity the last name signifies, especially if the last name is Polish, Irish, Italian, Japanese, etc. People with last names like Johnson or your surname Taylor typically do not because they are just thought of as typical American last name. It's typical that someome with a Polish or Italian last name considers themselves a Polish or Italian American, and it's nbd.
I happen to have closer ties with another country than some Americans because a large portion of my family are still in Poland and my Grandfather and Great Grandparents are all from Poland, so it's easier for me to identify ethnically with the Polish side of the family since they all come from one place: Poland, than the hodgepodge of Irish, Scottish and German on my mother's side of the family. That, and the fact that I have my father's Polish surname which is really visible and obvious while no one really knows or sees my mother's last name unless it's requested on a form of some kind. Now if you have a problem with this dtaylor, so be it. But it's just the way things are in the US.