Final answer:
The feature that was added to Windows Explorer in Windows 7 for easy sharing on home networks is called HomeGroup. It facilitates the sharing of resources like printers and media across computers on the same network.
Step-by-step explanation:
The feature added to Windows Explorer in Windows 7 that allows users to connect computers running Windows 7 on a home network and to automatically share printers, media, and document libraries is called HomeGroup. HomeGroup simplifies the process of sharing resources and files across a network. Once a HomeGroup is created, computers on the same network can easily access shared libraries and devices with minimal setup. Additionally, users can stream media between computers and even share a printer so that any computer at home can print to a single, shared printer.