I was actually meant to reply to your post but clicked 'thanks' by mistake. Anyways so? Because India's population is much more than Whole africa's combined. That's a common sense now?
And why not mention ' United States currently has the most billionaires amongst the world's top 10 but India is expected to soon overtake the United States to gain more billionaires among the worlds top 10 than any other country.'
Forbes list of billionaires - Wikipedia, the free encyclopedia
And that's how democracies work. There will always be inbalance in income.
According to the same source provided by you US and UK and still has 14% and 12% poverty even after being so rich whereas china just has 2.8% even though it is still developing. So it's not the country it's the system.
https://www.cia.gov/library/publications/the-world-factbook/fields/2046.html
And btw you're the one who started india bashing.