Im learning this right now and I think its either a or c. Sorry if im wrong
 
        
             
        
        
        
Answer:
Expansionary monetary policy increases the growth of the economy, while contractionary policy slows economic growth. The three objectives of monetary policy are controlling inflation, managing employment levels, and maintaining long term interest rates.
Explanation:
Hope this helps
 
        
             
        
        
        
C. The Roaring 20’s (1920 – 1929)
        
             
        
        
        
The best explanation for how humans populated the Earth is that "they migrated
<span>mostly over land from Africa over the last eighty thousand years" since all human life originated in Africa. </span>