Answer:
They added machinery instead of workers which meant a lot of people lost there jobs as they weren't needed anymore. 
Explanation:
 
        
             
        
        
        
<span>C. He designed a plan for a series of interconnecting canals.</span>
        
                    
             
        
        
        
B.) Michelangelo is the answer.
        
             
        
        
        
What I'm sorry the question is not understandable
        
             
        
        
        
It is false battles in trenches were Usally at night and those did not happen very often.