Where's he from? What's his nationality?
He's from Spain. He's Spanish.
Where are they from? What are their nationality?
They are from Mexico. They are Mexicans.
Where's she from? What's her nationality?
She's from France. She's French.
Where's she from? What's her nationality?
She's from the United Kingdom (UK). She's British/English.
Where are they from? What are their nationality?
They're from Turkey. They're Turkish.
Where are they from? What are their nationality?
They are from Italy. They are Italians.