Austrian. Btw in austria, the country is called österreich.
The native language of a people is called their mother tongue or first language.
Native peoples can be called indigenous.
March 12, 1938, it was called the 'Anschluss'.
A native of Cardiff is called a Cardiffian
Emus are native to Australia, not Austria.
There are no indigenous or native people in Antarctica.
The nationality for people native to Portugal is Portuguese.
Inuit
I'm pretty sure they're called 'Austrians'.
An Austrian is a native or resident of Austria.
AUSTRIA