Both Pakistan and India are where they are now because of the British past imperialism. The western imperialist became expert in creating 'countries' out of inherently incompatible ethic groups ensuring they would never be united against the imperial power but instead always divided. Even after the imperial power has left these inbuilt dysfunctional nation states can never truly unite and this still pose little threat to the imperial powers as they still dominate global resource extraction via playing off different groups. China is now expanding its empire and will probably maintain the inherently dysfunctional land divisions created by the previous imperialists.