"Many Americans live in Germany."
Translation:Multaj usonanoj loĝas en Germanio.
It's easier to say "Americans" then to say the United States People, or People from the USA, or USA Citizens, etc. As an "american" myself, I believe only people from the USA call ourselves Americans.
So even here in duolingo, it's accepted that the English word, Americans, usually refers to Usonanoj and not to Amerikanoj.