Answer:
overpopulation, environmental degradation, warfare, shifting trade routes and extended drought. 
Explanation:
hope this helped
 
        
             
        
        
        
the correct answer is  B) preserved the union  i just took the test and i got it right
 
        
                    
             
        
        
        
Before Alexander wanted to be a God like Hercules. He felt like he deserve to be called as god after what he have done to defeat their enemies. However, greek kind did not want to recognize a human as God that's why instead of calling him god, they named him Alexander the great.
        
                    
             
        
        
        
Answer:
I speak for all americans when I say it is heartbreaking to know what happened that day. We were attacked, and innocent lives were lost, firefights crushed along with the 2,606 people that had families, and airports will never be the same again. It made us stronger though. Its just another event, along with millions others, the earth has been collecting on its shoulders for as long as we know. My point is this effected everybody on earth. No other location of earth needs to have that happen again ... and it wont! Salute.