Answer:
External and Internal forces.
Explanation:
The earth's relief forms such as Mountains, Rivers, Plateaus etc, are changed because of the action of internal and external forces for example; wind, water or human activities.
 
        
             
        
        
        
Answer:
The brief answer is that globalization has generated gaps in security in the food supply chain. As a result recalls are rising. However, food production, packaging, warehousing, shipping and supply chain technology has all evolved to seal these gaps.
Explanation:
 
        
             
        
        
        
I think the United States is a well developed country. Like if you see India or Africa they are still developing. 
I hope this helps :)