Answer:
The main difference is the presence of knowledge which made Africa, Asia, and the Middle East more developed and modern during the Middle Ages as compared to Europe because in Europe no importance was given to the knowledge by the people which leads to the development of other nations as compared to dark age of the Europe. Other parts of the world experienced “golden ages” during a time when most of the Europe struggled through the Dark Ages because of knowledge which enables other nations to made better their lives.
 
        
             
        
        
        
Answer: Today, as a result of extensive new research and profound changes in American race relations, historians view Reconstruction far more favorably, as a time of genuine progress for former slaves and the South
 
        
             
        
        
        
Members of Congress frequently support political positions that reflect voter opinion in their home states, which best reflects the constitutional value of republicanism.
<h3>What exactly is republicanism?</h3>
Republicanism is defined as a political philosophy centered on citizenship in a state-organized republic.
Members of Congress oftentimes take positions on political issues that reflect the view of their constituents, that makes them the element of the US Congress and best embodies the constitutional value of republicanism.
Therefore, Members of Congress frequently lend their support to political causes. 
Learn more about the republicanism, refer to:
brainly.com/question/2605617
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 the answer to your question is Mountainous topography.