I've seen some discussion on what a hypothetical united Europe and a united Africa would look like, but what about an United North America? This is purely hypothetical and I'm not pushing for a NAU (at least not yet), but I think it would be interesting to talk about what the economy, culture, demographics and military power of a North American Federation.
I imagine the dominant languages would be English and Spanish with a large French-speaking minority (Quebec and Haiti). Majority Christian with a large irreligious and Jewish minority, a smaller minority being Muslims, Hindus, Sikhs and other religions. Don't know where the capital would be.
Just to be clear, I'm counting Canada, US and Mexico as well as Central America and the Caribbean.