Answer:
These are examples of 'checks and balances'. Offen used in Constitutional government.
 
        
             
        
        
        
Answer:
Cities and urban centers formed around factories as people migrated there for jobs
Explanation:
People continued migrating to the US, children didn't have to win the right to work, and the food supply did not decrease. 
 
        
             
        
        
        
They both learned american indian customs . Hope this helps !:)