I want to know the answer to the following question:
What river mergers with the Cooper River to form Charleston Harbor?
All the background I'm provided with is that "The city lies just south of the geographical midpoint of South Carolina's coastline and is located on Charleston Harbor, an inlet of the Atlantic Ocean formed by the confluence of the Ashley and Cooper Rivers, or, as is locally expressed, "where the Cooper and Ashley Rivers come together to form the Atlantic Ocean."". Is that enough to answer the question?
Answer: yes