The United States Postal Service (USPS; also known as the Post Office, U.S. Mail, or Postal Service) is an independent agency of the United States federal government responsible for providing postal service in the United States, including its insular areas and associated states. It is one of the few government agencies explicitly authorized by the United States Constitution.
United Parcel Service (UPS) is an American multinational package delivery and supply chain management company.The global logistics company is headquartered in the U.S. city of Sandy Springs, Georgia, which is a part of the Greater Atlanta metropolitan area.
FedEx Corporation is an American multinational courier delivery services company headquartered in Memphis, Tennessee.The name 'FedEx' is a syllabic abbreviation of the name of the company's original air division, Federal Express (now FedEx Express), which was used from 1973 until 2000. The company is known for its overnight shipping service and pioneering a system that could track packages and provide real-time updates on package location (to help in finding lost packages), a feature that has now been implemented by most other carrier services.
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