Answer: I think just natural causes.
Explanation:
 
        
                    
             
        
        
        
Answer:
A. Edwin Hubble had access to many powerful telescopes and tools to observe more objects in space
Explanation:
All the other ones don't add up. The question is asking which detail from the text that supports thee inference that technological advancements Edwin Hubble to discover new information about the Milky Way.
 
        
                    
             
        
        
        
I cannot write the essay for you but I can give you an outline for one. What happened was, was that Rome suffered from a series; lineage of bad emperors who made bad decisions for its armies and bad decisions for its territories. Rome was in a state of decline for that reason. People were not satisfied with the condition Rome was in and this caused a reason for unrest which then caused another source of worry for the emperors. Furthermore, they were increasingly being attacked by foreign invaders first in small skirmishers and later in bigger ones until the fall of the Western Roman Empire. 
        
             
        
        
        
The limitations the prompt places on the writer are that it HAS to be global reform efforts from 1877 to 1922, and only how the Industrial Revolution affected it, not any other factors.  
Don't copy word for word, have a good day!