(a)Draw a sketch map of Nigeria.
                    On  the map, show and name:
                    
                      - the  eastern railway line and its termini;
 
                      - a main road from Lagos to Calabar;
 
                      - an  international airport and a river port.
 
                    
                    
                      (b)Highlight three ways in which railway  transportation is important to the economic development of Nigeria.
                    (c)Describe three problems affecting railway  transportation in Nigeria.