Answer:
Option: (A) not a period of intellectual darkness, rather, a faith dominated period; in particular Christianity flourished throughout Europe
Explanation:
Middle age was also called as a Dark age by the historians because at this time things were dark. During this era, Black Death (plague) was widely spread in Europe which caused the death of millions of people. Along with 100 years of war between France and England, starvation because of climate change in Europe led to the upset among the people. This was a period when people were devoting themselves to the god to fight from the devastating situation they were living.  
 
        
                    
             
        
        
        
Answer:
the most common ones are the square, circle, triangle, and the Pentagon 
 
        
                    
             
        
        
        
Answer:
I think its because we're not exactly immune to all the diseases, it's called the immune system because the cells defend the body from bad bacteria and it teaches your body to learn to fight against the bacteria from a virus/disease until the body is immune. 
Explanation: