A more thorough explanation:

Definition: DARPA is an abbreviation for Defense Advanced Research Projects Agency. It is a research and development agency of the United States Department of Defense responsible for developing new technologies for military use.

Example: DARPA has developed many technologies that have had a significant impact on the military, such as the internet, GPS, and stealth technology.

Explanation: The example illustrates how DARPA is responsible for developing new technologies that have been used by the military. The internet, GPS, and stealth technology are all examples of technologies that were initially developed by DARPA and have since been used by the military for various purposes.