Yes. Everyone concentrated within Europe is white (by default). Everybody with a high percentage of European ancestry is also white.
However, this is a new phenomenon, as at one point, individual European countries and, at the time, ruling states considered themselves to be their own race within a larger continent of other races.
Then you had the Nazi perception of race and pseudo-ethnic superiority, as Slavs were not considered Aryan and were considered racially inferior. And then you had the American perception of the Irish, Italian, Polish, and various other immigrants, who were treated as non-white and, if anything, were treated the same as the Blacks at that time.
So, really, it's all bullshit. Made up nonsense to make themselves feel better and to make others feel worse.
Have you seen the people in the Appalachian region in America? For as many blue-collar, hard workers as there are within that region, there are also a ton of bumbling dummys who convince themselves day in and day out that they're better than "noobs", when they themselves are a bunch of noobs, just with a lighter complexion.