Which retail innovation did the USPS introduce in 2004 to improve customer convenience and compete with private shipping companies?

The United States Postal Service has undergone significant retail transformations to modernize its customer experience and service delivery. This trivia question explores a major retail innovation implemented by USPS to compete with private shipping companies and adapt to changing consumer behaviors. Test your knowledge about how this government agency has evolved its retail presence!

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Automated Postal Centers (APCs) that function as self-service kiosks
USPS-branded convenience stores selling stamps and shipping supplies
Drive-through postal windows at all major post offices
Mobile post offices operating from converted delivery trucks