A friend of mine (a Texan) who has been teaching English in Taiwan for 5 years met up with me in Beijing. We compared notes and didn't find much different in the day to day life of Taiwanese and Chinese
By that rationale, Australia would be justified in invading New Zealand.
What if Tasmania decided they wanted to be a separate country?
If it did, I can tell you that the Australian government would send troops to kill everyone. And, Taiwan has been its own country since 1949. Now 50 years later they have to rejoin China at gunpoint? What about them deciding for themselves. See the Left goes on about 'freedom' - they don't care about it. They just hate the US and go against whatever it does. And the fact that the US likes the idea of a free Taiwan, means its bad.
And references to things 200 years ago - does nothing to in truth hide the fact that China is an evil dictatorship that wishes to conquer another territory which is Taiwan. The people there dont want to be part of China - and they should decide. Not anyone else. And especially not you and your Texan friend who decide that 'racial purity' exists as between the mainland Chinese and the Taiwanese and therefore they must be unified.