Answer:
Railroads used the iron to build railroad tracks but iron was weak and also dangerous. Soon people then realized that steel was a better material for tracks because it was able to hold more weight which then allowed heavier cargo. Railroads also transported mineral needed to forge steel.
Explanation:
 
        
             
        
        
        
Answer:
It means one of the secrets of success is the ability to understand people well. Which could also translate to having a high EQ (Emotional Quotient).
Explanation:
The success being talked about here is not only Financial but also Individual/Personal success (i.e when a person is generally happy and feels fulfilled).
Seeing things from the other person's view point helps you to understand why he/she behaves thinks and reacts to things the way they do. When you understand other people's emotions as well as your own, you : are able to make better, objective and intentional decisions in every aspect of your life, whether personal or at the workplace; become more confident; and have healthier relationships. This brings all-round success.
 
        
             
        
        
        
The answer is to slowly readmit the confederate states to the union
        
                    
             
        
        
        
Answer:
To prove their loyalty to America
Explanation:
 
        
             
        
        
        
Establish cooperatives based on the principles of communal living