There are a lot of misconceptions and irregularities in the thread.
The whole problem arises when calling names as India, Bharat, Hindustan.
India technically is not the name of the country.It was the name given to the land mass that collided with Asian land mass during the plate tectonic movement also which formed himalayas during the collision.
For the sake of simplicity westerners called sub-continent as Indian Subcontinent and latter called as India( including Pak and B`Desh).
But for historians and archelogists the very same land mass is used to called as Bharat, land ruled by Bharata.He was the first and very Emperor that ruled the whole sub-continent including parts of central asia and Afghanistan...... well to go by all the current day cities were mentioned in Mahabharata thousands of years ago.
After Bharata the whole kingdom was divided into parts to be ruled by sons, sons of sons,.......... When a king has 4 sons, the kingdom was divided into 4 on the basis of their understandings.It was also known as Kuru Vamsyam. Later ended with sons and grandsons of pandavas.
and now if we have to go by Archeological evidences, proofs has been found of the western coast of India of an submerged city(once Known as Dwaraka) supossedly more than 10,000 years old.
To put this to much more perspective, After Bharata it took nearly 16 generations to reach Pandavas and Kauravas.This is when Krishna known to exist.
During all these years the once great kingdom was again split into pieces and was later united under Duryodhana of Kauravas.And still there were numerous small kingdoms who allied Duryodhana.
So they have been fighting wars all these years and formed empires and then getting split and regaining control ,........ It was more like a Fission and Fussion happening one after another.
But after Bharata no one controlled the whole territory.
According to archelogists there was a pause in the development of civilisation for some couple of thousands of years. Well this can be attributed to the change in YUGA. At the end of every yuga something horible happens( either war/natural disaster) and reduces the population to less than a 3rd.
During this phase all those bad vanishes while only good survives to the next YUGA to continue the human existance and pass-on those Vedas.Hence technically This Kaliyuga is only 6-7000 years old.
Again started with brith of nations and wars to gain control of whole landmass.
In this new age it was only Maurya who gained control of the majority of landmass and later his grandson Ashoka who put everything together and later became buddhist.And for the next 1000 years the entire kingdom got split into different nations on the basis of our old Fission theory.
Then came foreign ( non-hindu) invaders. which later paved the way for christian invaders.,.......And was later united under Brits and was called as India.
This is a brief history of Bharat untill it became India.
People in Bharatavarsha fought each to gain control of much larger territory.There were invasions in the sub-continent when no one heard of any civilisation in the west.
Inshort, I would like to add my 2 cents is: We are not knowledgable enough to dig the right history of a great civilisation ,let alone commenting it.
I bet anyone that if a life time of a person if good enough to dig everything and decipher the whole hisotry of a more than 10,000 year old civilisation.
Peace..........and Good night.