Although I have known for quite some time that Tamil, Malayalam, Telugu, and Kannada were Dravidian languages I didn't know exactly how. I still don't know exactly how, but it seems that these languages share identical syntax, that is, rules for sentence formation.
It's so refreshing to read the work of an enthusiast of Dravidian languages who has spotted this commonality among these superficially different languages. But it brings to a point something much greater in significance. It becomes obvious that the entire peninsula of India is inhabited by speakers of the Dravidian tongue. However, modern India is co-inhabited to the north of Dravidian-speaking areas by speakers of Marathi, and Bengali: both Aryan languages which belong to the Indo-European family of languages.
A topographical map of the Indian subcontinent is instructive. The Dravidian languages occupy the Deccan plateau and the peninsular coast of East and West India. The Indo-Iranian languages - we'll just call them Aryan - are spoken in the Indus River basin, the Ganges basin and all the way into Bangladesh. The question is: was India always bi-lingual? That is to say was Aryan and Dravidian always spoken in India? Or - as has been the traditional - view, was the current Aryan distribution of languages the results of migrations into the Indian subcontinent displacing the indigenous Dravidians?
The edicts of Asoka are the first tangible archaeological record indicating that Dravidian kingdoms were in existence as early as the third century BC(300 BC). Asoka mentions the Chola kingdoms in Tamil Nadu. Extrapolating from this it seems obvious that the Dravidians were inhabiting the Deccan plateau as early as 300 BC. That is to say, Dravidian languages were being spoken in South India as early as 300 BC.
Whatever the case may be, factually, and historically, in the abstract we have the co-existence of these two language families, and this abstract fact must be reckoned with in the abstract. Speaking abstractly, much is possible. We can ask the question: how did this co-existence come to be?
Here, it is profitable to discuss a parallel example with respect to China. It is argued by Jared diamond and others that the distribution of Thai, Viet, and Cambodian languages was far more extensive especially to the north into southern China that is currently the case. It is argued that the Sino-Tibetan family of languages “pushed” into areas inhabited by Thai, Vietnamese, and Cambodian speaking people. This is an abstract argument. Based on the current factual evidence of the distribution of language families in China.
The only argument which exists attesting to the presence of Aryan languages in the Indus Valley basin and the Ganges basin puts forth that Indo-Iranian languages were extant in the Indus Valley basin and Ganges basin and Aryan in fact was the language of the Indus Valley civilization. This suggests that the Indo-Iranian family of languages radiated from a common ancestor spreading across the Indus Valley into Iran and Afghanistan.
How does this compare with Diamond’s parallel argument with regard to the distribution of Sino- Tibetan languages in China? He didn't specifically argue that there was a period of invasion, instead, he certainly does proffer that Sino-Tibetan languages “pushed” southwards displacing the indigenous languages that were present, namely, Thai, Vietnamese, and Cambodian. His argument is based on and follows logically from the modern distribution of languages in China and Indo-China.
So, to construct an argument as persuasive as Diamond’s but addressing the co-existence of Aryan and Dravidian language families in India, we would only have to base a similar argument on the modern distributions of languages in India and Central Asia.
So, arguing from Diamond's position we can conclude - as he did - that the distribution of Dravidian languages was far more extensive than at present and Aryan languages “pushed” southwards displacing the indigenous languages that were present, namely, Kannada, Telugu, Malayalam, and Tamil.
Having established this and returning to the parallel argument perspective we cannot go to the Vietnamese and say 'Look your language was far more extensive than it is right now. Therefore, you should use this as a political advantage to at least assert your rights from a historical point of view. The same thing could be said to Thailand, and Cambodia. But this doesn't change the economic and political status quo, which is the economic power of Sino-Tibetan languages and people.
It occurred to me that the civilizations in Cambodia evolved much later than the period of a classical Indus Valley civilization in India. But, what I want to note is that the language of the Huang Ho civilization spread out from the Huang Ho civilization. In China civilization spread out South from the center of civilization around the Huang Ho, and this spread displaced the Vietnamese, Thai, and Cambodians further south. But, what's interesting is that in India 'Dravidian' doesn't really refer to a race so much as it does to the language and culture. For instance the Sino-Tibetan is the language of the Burmese but racially they are much different than the northern Chinese. But the language spread south and assimilated the people.
Is this what happened to the indigenous populations of India? Were they assimilated by the Dravidian language and culture? The only way to know for sure is to decipher the Indus Script.