City-states built up armies/military strength and strong thick walls. Sargon's creation of his empire changed Mesopotomia because it made it all under one ruler. It also make Mesopotomia stronger.
 
        
                    
             
        
        
        
Answer:
Investing
Explanation
 — The process of setting money aside to increase wealth over time and accumulate funds for long-term financial goals such as retirement.
 
        
             
        
        
        
Answer:
National security or crime unit
Explanation: