The answer is A because in 1774, the British sent a fleet against the city, but were stopped. They tried again in 1780 with taking over the city for 40 days. The state capital was moved to Columbia in 1786 after Charleston was attacked so much by the British.
<span> the front-line trench (or firing-and-attack trench), the support trench, the reserve trench, and the communication trenches </span>