nationality
Nationalität is a German noun used to refer to the state of belonging to a particular nation. It is often used in the context of describing a person's origin or citizenship, and is equivalent to the English term 'nationality'.
The nationality of my mother is American.
In this sentence, the speaker is declaring the nationality of his/her mother. It begins with Die Nationalität (The nationality) followed by meiner Mutter (of my mother). The phrase concludes with the German word for American, amerikanisch.
What is your nationality?
This is a simple question about the nationality of the person being addressed. Was ist is the German equivalent of English's What is, and deine Nationalität is your nationality.
Her nationality is Canadian.
This sentence is making a statement about the nationality of a female third party using the possessive pronoun Ihre (her) followed by Nationalität ist (nationality is) and the German word for Canadian, kanadisch.