If you were forming a nation would you use geography or culture to make your land boundaries?

Question

If you were forming a nation would you use geography or culture to make your land boundaries?

Answer 1

From a military point of view - Geography. You need to plan your defense.

From a socio-economic viewpoint - Culture.

Answer 2

A nation is a social and cultural group of like-minded people.  Most nations have never been defined by geographic boundaries (political borders). Most of the time they cross geographic borders.  

Answer 3

Ethnic differences, so yeah, culture, and if some land is uninhabited, then use geography there