OTL America is Multilingual
In English (
pretty much every other language, and to a lesser extent, Brazilian and Iberian Portuguese), "America" refers specifically to the United States of America and anything having to do with it. It is rare and practically unheard of in English to refer to say, a Argentine or Guyanan as an American, as again, this term is reserved for the United States in the English language.
Whereas in Spanish (
Latin American Spanish, not Castilian Spanish) "America" refers to both North and South America. It can get confusing for Spanish speakers from South America and Central America learning English, and understandably so. On a related note, most Castilian Spanish speakers in Iberia use "America" to refer to the United States. It's mainly Spanish speakers in Central America and South America who use "America" to refer to both of the American continents.
Hope this clears things up.
Or, if you were refering to the United States all along, then yes, there are a wide variety of languages spoken in the United States of America. But, this thread is asking how could the United States be more multilingual than it already is.