The Populists believed that the federal government needed to play a more active role in the American economy by regulating various businesses, especially the railroads.
 
        
                    
             
        
        
        
Answer:
B.  Food shortages that led to starvation
Explanation:
There wasn´t a lot of food in the area and the river that was near them was very salty and unsafe to drink along with the mosquitos that lived in the mushy areas cared a certain disease with them.
 
        
             
        
        
        
Pollutants is the general term. 
Chemical pollutants. Waste pollutants. Chlorofluorocarbons
        
             
        
        
        
Answer:
Pretty much they just settle disputes that might come about.
Explanation:
Trade organizations are forums of governments to negotiate trade agreements. And if a dispute of some sort appears, the trade organizations are able to settle it by having the papers ect. Hope I helped! Have a great day! :)