China's claim over Taiwan is not a historical one

The governing Constitutions of both ROC and PRC state clearly that Taiwan is part of China. All the governments of the democracies and non-democracies, including U.S. and Japan, respect China's “One China” policy, except for only 24 banana republics. And all the international organizations (e.g. UNO) and standards organizations (e.g. ISO) treat Taiwan as part of China. As you can see from these situations, China's claim over Taiwan is a not a historical one. Rather, they manifest the fact that Taiwan is part of China. As part of China, Taiwan has no right for self-determination that results in its independence from China, as PRC's Constitutions states. If “Taiwan Independence” is a matter, it is one for the whole of China to decide, not only those on the Taiwan island. Contrary to what you believe, it is the view of the entire China ( China's Taiwan plus the mainland plus HK plus Macau) that matters most.