Which is older, China or Britain?

China's written history can be traced back to Xia over 5,000 years ago, while Britain came to the stage of history when it became a province of the Roman Empire, over 2,000 years ago. The US was a former colony, that's only 600 years counting colonial history. Of course, counting the history of the Indians, it's about 2000 years, but that has nothing to do with the current United States, so there's no doubt that it should be China