"India's share of the world economy when Britain arrived on its shores was 23 per cent," Tharoor said at a debate at the University of Oxford recently.
"By the time the British left it was down to below 4 per cent. Why? Simply because India had been governed for the benefit of Britain. Britain's rise for 200 years was financed by its depredations in India," he said, debating: 'This house believes Britain owes reparations to her former colonies'.
Although he did not provide attribution for his statistics in the speech, some historical economic research backs up his account - although his opponents in the debate argued that India benefited overall from British rule.
"The passionate speech touched off a huge debate online, with many young Indians commenting on the video, which has been viewed half a million times since being posted on YouTube last week," it said.
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The comments on social media forums were dominated by young Indians, and Tharoor's name was among the top trends on Facebook in India for several days.
As for the Oxford Union debate - Tharoor's side won 185 votes to 56.