Answer: The city that has the busiest port on the Mediterranean Sea is :
Explanation:
The Port of Valencia, one of the busiest port in the Mediterranean and the sixth in Europe, as of 2015, handles approximately 4.4 million TEUs per year.
Plans for the new container terminal are designed to help service the world's largest ships, which can carry 24,000 TEUs, as well as position it to use automated technology in the future.