Language in Cambodia

The different states of India have different official languages, some of them not recognized by the central government. Some states have more then one official language. Bihar in east India has three official languages - Hindi, Urdu and Bengali - which are all recognized by the central government. But Sikkim, also in east India, has four official languages of which only Nepali is recognized by the central government. Besides the languages officially recognized by central or state governments, there are other languages which don't have this recognition and their speakers are running political struggles to get this recognition. Central government decided that Hindi was to be the official language of India and therefore it also has the status of official language in the states.