There is no continent called "America". We have North America and South America.
When someone says "South American" I don't think Alabama I think Brazil or Argentina.
The term "North American" is commonly used when you're describing something that applies to both Canada and the US. Eg. "North American sports teams".
We commonly use the term "Central American" when referring to Mexico, El Salvador, etc. because even though they are technically in North America there is a strong cultural divide, similar to how the middle East is technically Asia, but you'd never refer to someone from Saudi Arabia as "Asian".
8 years would be the Nexus 6P. I booted mine up last year and aside from the faulty SoC it's still a perfectly usable phone. Those dual front facing speakers are still great. Battery life is poor, but then it was poor to begin with.
I think we've also plateaued in terms of features. A phone in 2030 will probably have a brighter screen and slightly better camera, but outside of synthetic benchmarks I doubt it's going to look or feel any different than the Pixel 8 will in day to day use.