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