Statements (23)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | 
                                    
                                        
                                            gptkb:public_service
                                        
                                         | 
                            
| gptkbp:historicalPeriod | 
                                    
                                        
                                            
                                            Modernized in 19th century
                                        
                                        
                                         Started in ancient times  | 
                            
| gptkbp:purpose | 
                                    
                                        
                                            
                                            Delivery of mail
                                        
                                        
                                         | 
                            
| gptkbp:regulates | 
                                    
                                        
                                            gptkb:International_Postal_Agreements
                                        
                                         gptkb:National_Postal_Authorities  | 
                            
| gptkbp:relatedTo | 
                                    
                                        
                                            gptkb:post_office
                                        
                                         gptkb:Parcel_Post Airmail Railway Mail Service Mail Carrier Mail Truck  | 
                            
| gptkbp:usedBy | 
                                    
                                        
                                            gptkb:post_office
                                        
                                         Courier Companies  | 
                            
| gptkbp:uses | 
                                    
                                        
                                            gptkb:aircraft
                                        
                                         Bicycles Trains Vehicles Ships On-foot delivery  | 
                            
| gptkbp:bfsParent | 
                                    
                                        
                                            gptkb:murals_at_U.S._Post_Office,_San_Pedro,_California
                                        
                                         | 
                            
| gptkbp:bfsLayer | 
                                    
                                        
                                            
                                            6
                                        
                                        
                                         | 
                            
| https://www.w3.org/2000/01/rdf-schema#label | 
                                    
                                        
                                            
                                            Mail Transportation
                                        
                                        
                                         |