United State Postal Service is also highly popular as USPS is the government’s official postal service company. It is the world’s largest mail and parcel delivery company. From its creation in 1792 to the present date, it has been working honestly and providing as much as good services to its customers. More than 5 lakhs career employees and more than 1.3 lakhs non-career employees are associated with the USPS. Hence, it is also one of…