Answer:
support (a building or other structure) from below by laying a solid foundation below ground level or by substituting stronger for weaker materials.
Explanation:
This is the general definition of underpin
 
        
             
        
        
        
They both present the idea of building a railroad through the rocky mountains, they have little differences in the origin since the Carver's proposal suggested to build it from Michigan Lake to the Pacific Ocean and the Pacific Railway Act states the idea of going from The Missouri river to the Pacific ocean. Even when they were proposed with a difference of 30 years one from the other it was also Dr. Hartwell Carver who was part of both proposals.
 
        
             
        
        
        
D. determine audience and purpose
        
             
        
        
        
Answer:
odysseus hides a tear from Eumaeus 
Explanation:
he doesn't want Eumaeus to know how sad he is