China is the most populous country in the world. Although BTC is banned in China, many Chinese are still investing in BTC. If one day China declares BTC legal, BTC's prices will skyrocket!
Me too I think china has a great power in terms of crypto currency , let us remember that china has the largest population around the world which mean it could be a great advantage interms of investment because they can literally control the price if they want to. Chinese are one of the smartest people in terms of money they can make money easily so this is just one reason why china for me is the leading country who can manipulate or have the greatest influence on bitcoin.