Answer:
The most traumatic era in the entire history of Roman Catholicism, some have argued, was the period from the middle of the 14th century to the middle of the 16th. This was the time when Protestantism, through its definitive break with Roman Catholicism, arose to take its place on the Christian map. It was also the period during which the Roman Catholic Church, as an entity distinct from other “branches” of Christendom, even of Western Christendom, came into being.
Explanation:
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1. They’re many numerous reasons starting with the effects of the Treaty Of Versailles, the rise of the military in Germany and Japan, and the failure of the League Of Nations.
2. Because of the Japanese attack on Pearl Harbor
Benito Mussolini and other radicals formed a group to support the war against Germany and Austria hungary
Answer:
They had never seen these diseases so their immune system couldn't handle them. So, lots of people died and the population went down.