Are some British trying to be imperialistic saying that American is a "British dialect?"

[Dalek Prime]

Well, there was a bit of to-ing and fro-ing, shipping and trading, re-posting and retiring, fighting, looting, getting married and getting rich, putting down revolts and making laws, killing local wildlife and catching malaria, cultivating coffee and cirrhosis, going mad and going broke, before any colonies divided off into new countries. But, on the whole, yes, empires are consolidated by the settlers who stay. They spoke English and, rather than learn the various indigenous languages, they forced the natives to learn English.
That sure made the American financial empire easier to build.
Lots of Americans and Canadians are still tracing their 'roots' back those two little islands. Heritage is nothing to be ashamed of.

Admittedly, I'm quite proud of my UEL heritage.

[Skip]

It's nothing to be proud of, either. Everybody had to come from someplace, whether by their own decision or that of someone in their past.
Calling a spade a hoe is not helpful to future historians.

[Dalek Prime]

It's nothing to be proud of, either. Everybody had to come from someplace, whether by their own decision or that of someone in their past.
Calling a spade a hoe is not helpful to future historians.

It was the beginning of Upper Canada and New Brunswick. I can take pride in it without being exclusive about it. Where's the harm? And why do people who take pride in their own heritage wish to denigrate mine? The originals faced hardships that gave others a smoother transition into this country, and opportunity.

[Skip]

Not denigrating anything. Everybody has ancestors; some laudable, some regrettable, some risible, some forgettable. We don't know what most of them did or how well they acquitted themselves in what circumstances. All we know is what they left behind - which includes us and our languages. I only meant that it's neither a point of pride nor of shame that present-day Americans speak English: it's simply a fact. Calling it American is simply inaccurate, in light of the fact that these continents had a hundred languages before the first Spaniard or Briton set foot on its shores.