The first and the third sentences contain parallel structures. Parallel structure, or parallelism, is the repetition of the same grammatical structure or form within a sentence, so it becomes more balanced, and, therefore, more readable and clear to understand.
In the first sentence, the parallel structure has been used in the comparison: "... would make war <em>rather than let</em> the nation survive and accept war<em> rather than let</em> it perish..." 
In the third sentence the same grammatical form has been used too: "<em>all dreaded it </em>(1) <em>all sought to</em> avert <em>it </em>(2)."
 
        
                    
             
        
        
        
Answer:
How much money do you earn every 3 hours?
 
        
                    
             
        
        
        
Answer:
the main cause or main effect.
Explanation:
Whenever writing an essay, you should always bring it back to your main point or claim. If your focus is on a cause-and-effect, then you should always tie your details back to that.