India was pressured by global financial institutions to switch to 2008 because a huge chunk of the economy wasn't being calculated in the GDP. That may not be the case with China.
In fact we still do not know the scale of the informal sector.
http://www.thehindubusinessline.com...ll-a-vast-informal-economy/article5282078.ece
Indian empires have spread all the way from Central Asia to Indonesia at different times. There were many times when the borders were much larger than what it is today.
When the British left India, they attempted to balkanize India into small countries, like in Europe. Even during British rule, India was divided into many autonomous countries. It was actually the Indian leadership that used force and diplomacy after independence to unite India.
This was how the British Raj colonies looked in 1947. All the grey areas are the ones where the British had direct control. The British gave permission to over 500 princes and nawabs the option to not join either India or Pakistan.
They say the British united India, but they didn't. It was the Indian leadership that followed the British that united India.
Churchill even related India's attempts at unity with Adolf Hitler.
Some stuff that our first PM said.
In July 1946, Nehru pointedly observed that no princely state could prevail militarily against the army of independent India. In January 1947, he said that independent India would not accept the divine right of kings, and in May 1947, he declared that any princely state which refused to join the Constituent Assembly would be treated as an enemy state.