1. The rulers who came to power after Charlemagne failed to defend the empire. 
2. Europe was threatened by Muslims, Magyars, and Vikings in the 9th and 10th centuries.
        
                    
             
        
        
        
Answer:
Cultural clashes, land disputes and criminal acts 
Explanation:
The European powers and their colonies enlisted Indian tribes to help them conduct warfare.
 
        
             
        
        
        
USA refused , because the Senate don't ratify this document
        
                    
             
        
        
        
Answer:
Interstate 75
Explanation:
On a map, the only highway that travels from Florida straight to Atlanta is Interstate 75