Question

What is the difference between a nation and nationalities ​

Answer 1

Nation is a country or state ?
Nationality is your culture where you come from

Answer 2

A nation is where your nationality is.

Step-by-step explanation:

Example -

Your nation is the nation of Korea/or just Korea. Your nationality is Korean

Nation - a large body of people united by common descent, history, culture, or language, inhabiting a particular country or territory.

Nationality - the status of belonging to a particular nation.