This may be true on the surface, but India is an incredibly diverse mix of people. There are a ton (talking 60-70+) of groups of people with different cultures

This may be true on the surface, but India is an incredibly diverse mix of people. There are a ton (talking 60-70+) of groups of people with different cultures who speak different languages and often different religions. They make look the same to you; they are not the same. Go there and see it for yourself. It is incredible.