Lol. How do you even know Shudras or even for the matter Brahmins as my forefathers? Do you honestly think you know what you are talking about? Do you think Shudras are incompetent fools and incapable of civilization? Or they were uneducated? As I said, your words only demean your own anchestors and this last statement you are spitting on them.
I honestly don't believe Indian subcontinent civilisation took off only after the "arrival" of Aryans. There is many historical evidences to that fact. But of course, inferiority ridden complexes from you folks is hard to get past by.
The then blackey Indians were subjugated by fair-skinned Aryans and were forced to remain segregated with the introduction of the caste system that kept the Aryans supreme in the country of blackeys.
On the other hand, Muslim immigrants did not segregate any of the locals and this is why we remain united whether we live in BD, India or Pakistan.
At least, I am happy that the Hindus cannot blame Muslims for their caste system. It was introduced by the master race Aryans and enforced upon India's blackey slaves.
I am just citing historical facts. Varman seems to be a mighty warrior/ ruler group of people. Varman may mean "A person with a (military) shield". So, you may belong to the master (probably Ksatriyo) race.
By the way, I am not talking that the great Indian civilization with its unique artistic creations took off after the arrival of the Aryans. The contrary is true that can be attested to the Mandirs built in South India, Ilora/ Ajanta, for example.
But why do you have to deny a part of history to feel good? That is Aryan immigration. Aryans are present in Iran and Afghanistan in our west. Why do you have to say that they stopped there?
Note that Hindus always blame Muslims for the destruction of Mandirs when thousands of such Mandirs remain intact through Bengal. India and Pakistan.
Please read a book titled, "The Caste Dynamics of Bengali Hindu". It is about Bengal but there are many parallels with this system in other parts of India.