Quote Originally Posted by English assassin
looks like those Mongols just pipped us for size, but we certainly have the honours in numbers: http://en.wikipedia.org/wiki/World%27s_largest_empires. The puny Russians are only just over 50% as big.
Hmm... The British Empire entry says it is the largest with over 37 million, and the Mongol Empire entry says it is the largest with under 38 million, so they both had above 37 million but below 38 million

And the land mass seems to fluctuate as one goes down the different list. Britain goes from 37 million to 36 million, and Mongols go from 38 million to 35 million...

The matter is quite moot, it seems...