Why did the black death affected more cities near Mediterranean sea than sea?

This statement needs to be clarified. The Black Death, which was a pandemic caused by the bacterium *Yersinia pestis*, did in fact affect cities near the Mediterranean Sea, but it also affected many other regions of the world. The Mediterranean Sea was an important trade route at the time, and it is likely that the disease was spread by travelers and merchants who came into contact with infected individuals or animals. However, the Black Death also affected cities and regions far from the Mediterranean Sea, including parts of Asia and Africa.