The name given to people who support the idea of movements to form own country with same language religion or language.

What is that name?

3 answers

The name given to people who support the idea of movements to form their own country based on common language, religion, or ethnicity is "separatists" or "secessionists."
Nationalist
Yes, "nationalist" is also a term that can be used to describe people who support movements to form their own country based on shared language, religion, or ethnicity. Nationalists often emphasize the importance of national identity and independence from larger political entities.