When was the GPS invented and by whom?

The correct answer identifies that the GPS, or Global Positioning System, was developed by the Department of Defense (DoD) beginning in 1973. This initiative aimed to provide accurate and reliable navigation information to both military and civilian users. The system was initially designed for military applications, utilizing a network of satellites to allow for precise positioning, navigation, and timing.

The significance of this development stems from the fact that it marked a pivotal shift in navigation technology. The system became fully operational in the 1990s, making wide-ranging impacts not only on military operations but also on civilian navigation, thus revolutionizing how we understand and use geographic positioning today.

While other organizations, such as NASA and the FAA, have contributed to advancements in related technologies and navigation systems, the primary responsibility for the invention and establishment of GPS lies with the Department of Defense.