American Samoa
noun: American Samoan(s) (US nationals)
adjective: American Samoan
Andorra
noun: Andorran(s)
adjective: Andorran
Angola
noun: Angolan(s)
adjective: Angolan
Anguilla
noun: Anguillan(s)
adjective: Anguillan
Antigua and Barbuda
noun: Antiguan(s), Barbudan(s)
adjective: Antiguan, Barbudan
Argentina
noun: Argentine(s)
adjective: Argentine
Armenia
noun: Armenian(s)
adjective: Armenian
Aruba
noun: Aruban(s)
adjective: Aruban; Dutch
Australia
noun: Australian(s)
adjective: Australian
Austria
noun: Austrian(s)
adjective: Austrian