Question

i have a simple equation in mind sharing power=dividing power=weakening the country.why do we start by talking of this?

Answer 1

A social division based on shared culture. People belonging to the same ethnic group believe in their common descent because of similarities of physical type or of culture or both. They need not always have the same religion or nationality. 

Answer 2

this has an advantage too. as we divede the contry indirectly we gain power .