Which ones, please give examples. No two countries are same, India's situation is totally different.
India will survive because of it's majority Hindu population that was almost always ruled by foreign invaders. This is the first time the Hindus managed to get a large enough Hindu country that is ruled by themselves, the Hindus have a lot of grievances against foreign rulers specially the Muslims. India will also survive because of it's strong democratic institutions, these institutions will ensure the RSS and BJP fundamentalists will never manage to go to such an extent that the state itself will become vulnerable to disintegration. India will survive because of it's pragmatic policies of self interest and the country achieving economic development.
As I said, disintegration or loss of territory is possible if world wars happen with two or more belligerents.