Answer:
Immigrants ramp up the competition for jobs, creating a surplus in labor for some sectors. Also promoting innovation.
Explanation:
 
        
             
        
        
        
The question can be classified as to what purpose they will use their power. Either for selfishness or selflessness. For selfishness, they are corrupt and will make their people suffer. For selflessness, they will try to find answers or solve common issues for the people and or for the country.
        
                    
             
        
        
        
I believe the last one would be barley
        
             
        
        
        
Muspelheim must be the answer
Muspelheim was the home of the Fire Giants, an old enemy of the Aesir gods led by Odin