What was the name of the fortress taken in the Battle of Tripoli?

The correct answer pertains to "The Fortress of Derna," which is significant because it is associated with the First Barbary War and the notable military engagement known as the Battle of Tripoli. During this conflict, U.S. Marines and their allies launched an expedition in 1805 to capture the city of Derna, which was a key stronghold in the region. This battle demonstrated the United States' willingness and ability to project military power and protect American interests overseas, marking a pivotal moment in naval and military history for the nation.

The other choices refer to various historical forts but do not relate to this particular conflict. The Fortress of Tripoli is an appropriate name but does not specifically denote the fortress that was taken during the battle in question. The Fortress of San Juan and the Fortress of Charleston are located in different regions and contexts, unrelated to the battle in Tripoli. Understanding this context helps clarify why Fort Derna is acknowledged as a critical location in the U.S. military's early history.