I saw on the news that Obama was going to visit Beijing pretty soon, and got to thinking...why does China have so many more people than the USA, when ostensibly, as the worlds melting pot, we should be the "Times square" of the planet and attract the greatest volume of planetary (even galactic) drifters. So, to further pursue my inquisitiveness, I decided to look at the distribution of populations of all the planet Earth's countries in order to see if I could see any interesting patterns. What I found is that China and India each have roughly 4 times the number of people than the USA, which came in (a distant) third. I'm no statistician, but 4 times? Each? I've been all over the USA and it seems to me like we're packed in like sardines. Now I'm trying to imagine 4 continental USA's stacked 4 high or 4 wide, and then multiplying that by 2 in order to account for both China and India. It's mind bending. http://en.wikipedia.org/wiki/List_of_countries_by_population If you look at the distribution of the rest of the 200 or so countries on the list, it looks like a more reasonable distribution, with perhaps the exception of the population of Russia, which is half the USA, but occupies an enormous amount of territory. Another surprise for me was Canada. Only 35 million? About 1/10 that of the USA? That's less than the population of California, and Canada has a similar geographical size to the USA. In any case, does anyone else think that these population distributions are odd? One might think that when these populations/governments began to get so large, they would splinter into smaller, autonomous governments. What has kept India and China together in order to allow their populations to become so disproportionately large relative to the other countries?