Liberia.
It comes from the Latin word liber which means free and Liberia is a country in West Africa.
        
             
        
        
        
1) Assistance and help. 
2) Organized tools and resources. 
3) In depth research resources which is not available anywhere else. 
4) Easy access and quality information.
Hope it helps. ☺
 
        
             
        
        
        
A is the answer.
None of the world's largest cities are in Western Europe. Moscow is not in western Europe either.