Answer:
They wanted to expand their terratory
Explanation:
Since the US was almost complete, and only a few indian tribes lived in plantations made by the US goverment. The goverment wanted to make America whole so that is why they decided to wage war in the 19th century. 
 
        
             
        
        
        
Please mark me BRAINLIEST! 
It would be B. That is because the US didn’t start developing nuclear weapons until after the beginning of WWll.
Hope this helps!
        
                    
             
        
        
        
Answer:
Soviet leader Nikita Khrushchev agrees to remove Russian missiles from Cuba in exchange for a promise from the United States to respect Cuba's territorial sovereignty.
Explanation:
 
        
             
        
        
        
B because none of the other things happened. A massacre is when a group of people with no defense are murdered.