Answer:
Among the different kinds of parasites, bacteria and viruses, and their associated diseases, that were transmitted along the Silk Roads, plague was one of the most notable. Plague is a disease caused by the bacteria Yersinia pestis, commonly carried by fleas.
Explanation:
That would be the Roman Catholic Church.
Both sides were Christian churches but the Eastern one based around Byzantium was Orthodox while the Western one based around Rome and Pope was the Roman Catholic church. They still exist today except that the Orthodox church is not unified by a single leader and countries that practice Orthodox Christianity each have their own religious leader.
Answer: Reflection over the x-axis
Explanation: