Still, given that you think a 20 million dollar tax increase on top of a 500 million annual cost for the war was a devastating economic blow, it's easy to see how you could have developed another silly notion here.
Not any more than the rest of the country. In fact, despite it being the south's main east coast port, Charleston's only major new fort between 1800 and the war was Fort Sumter. The rest were all there from revolutionary days. Once again you simply do not know your facts, nor could you accurately identify the truth of the situation if it were stapled to your forehead.