From Sicily, trading ships loaded with infected flea-bearing rats carried the Black Death to ports on the mainland of Italy. What conditions in these medieval cities provided the spread of the Black Death.

The Black Death.

Explanation:

The Black Death report first recorded at Messina, in Sicily in 1347. The plague continued for three years and killed one-third of all the people in Europe. It began to spread in Europe through the trade route that connected the Black Sea to the Mediterranean Sea. The Medieval cities with the trading connection, effected by the epidemic as it was the centre of ports where ships arrived with infected rats. Many deaths occurred in the trading city-states, which were in the coastal region.

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