The Northeast became a leader in commerce because of its location and early development of industrial industries. The Northeast became a manufacturing hub in the colonies and in the newly formed United States which created specialization and the growth of commerce in this region relative to the South which was more agriculturally based. 
        
             
        
        
        
What’s the rooftop to the world
Answer: The Roof of the World or Top of the World is a metaphoric description of the high region in the world, also known as High Asia. The term usually refers to the mountainous interior of Asia, including the Pamirs, the Himalayas, the Tibet, the Tian Shan, and the Altai Mountains.
Have a good day;)
        
                    
             
        
        
        
Im pretty sure its the NCR  ( Nuclear Regulatory Commission ) <span />
        
                    
             
        
        
        
Answer:  "hydrologic cycle" .
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