>>In a book that I'm reading in order to improve my English, there are some info about how the idiom has been created and also about its evolution, aggregating words from other languages, like French, German, Italian and Portuguese.
>
>You forgot Yiddish! (and Hebrew, Spanish, and probably many more). It is a country of immigrants so it's only natural.

You make it sound like English language was invented and maintained in USA... :)