China's territorial claims over Taiwan starts from 1949 since the civil war ends. [1]
The semiconductor doesn't play significant factor here. It only becomes hot topics in past few years because of TSMC's lead on its process, but really doesn't have any direct relationships.
In other words, current situation is a result of U.S. "Asia-Pacific Rebalance" strategy and military deployment over the first island chain [2] that China wanted the island regardless of TSMC.
The semiconductor doesn't play significant factor here. It only becomes hot topics in past few years because of TSMC's lead on its process, but really doesn't have any direct relationships.
In other words, current situation is a result of U.S. "Asia-Pacific Rebalance" strategy and military deployment over the first island chain [2] that China wanted the island regardless of TSMC.
[1]https://en.wikipedia.org/wiki/Chinese_Civil_War
[2]https://en.wikipedia.org/wiki/First_island_chain