[modo_mario]

>Rome was the centre of the empire so had every type of person just as London had as the centre of the British empire.

And yet the kind of diversity you're probably expecting was incredibly rare in both. There's enough demographic data to know that.

[onraglanroad]

That's such a bizarre statement. Diversity was rare in London? Have you ever been there (I lived there for years).

London is quite possibly the most diverse city in the world.

Edit: I thought perhaps New York might be more diverse, so I hedged but it turns out Toronto is! I would not have guessed.

[modo_mario]

I was talking about the past when the british empire still existed.

New york is also diverse but if you look at demographic data from historically not that long ago and are racialising then it really wasn't. Those shifts are recent.