Appalachian<span> highlands, and Rocky </span><span>Mountains</span>
        
                    
             
        
        
        
Bc it basically told how it was built and shapped over the years
        
             
        
        
        
<span>The decline and end, which gave rise to the Ming Dynasty, of the Mongol Empire was mostly due to internal factors. However, the internal factors were exasperated by frequent Chinese revolts, mostly in southern China. In addition, the Mongol army was not what it had been under Kublai Khan, the quality and quantity of which contributed to the fall of the Mongol Empire.</span>
        
             
        
        
        
We need more details what do you need help with ill help you? tell me the question in comments
        
             
        
        
        
False
Hope this helps!! Have a good day!! :)