Indeed, if you wanted to refer to MEX, CAN + USA as one entity you would use “North America”. But America is colloquially understood to mean USA

North American Alliance has a ring to it like the European Union.

It also means the entire _Continent_ your take is pretty US-centric

> It also means the entire _Continent No, it doesn't.

"North America" is the continent the USA is on, and South America is a neighboring continent. There is no continent called "America" alone.

That depends entirely upon your philosophy Horatio:

https://en.wikipedia.org/wiki/Continent#Number

"Continent" isn't remotely as straightforward as many may think and the teaching on what and what isn't a continent (or counted as such) varies globally.

Different models are taught in different countries.

North and South America, together, are called "the Americas", not "America".

"Germany" means "land of the Germans" but last I checked there's also Austria, Luxembourg, Switzerland, and also Prussia to be historically accurate.

It feels abnormal to many mexicans I know. Why does one country use the name of the entire continent?

In English, it doesn't. The names of those continents are North America and South America.

It feels weird to them because they're used to calling the Americas "America", the US "Estados Unidos" and Americans "estadounidenses". Well, it seems weird to me as a (United States of) American that they use those names. Our cultures are just different.

The United States of America is the only country in the world with "America" in its name.

Calling the US "America" is no more "abnormal" than calling Americans norteamericanos (Even setting aside Mexico also being part of North America, what about Canadians?) or estadounidenses (given Mexico also being the "United Mexican States").