From ImperialWiki
The Federation's line in the sand against the Romulans.
Established after the
Earth-Romulan War of the 22nd century, the
Romulan Neutral Zone was a band of space that was absolutely demilitarized. The neutral zone provided both states with a buffer area that kept tensions low by giving plenty of time to see an attack coming. This large area of open space that had to be crossed before any attack against the
Federation could be made may have influenced the
Romulans to develop
cloaking devices for their fleets. Ironically, after one Romulan violation of the Neutral Zone, the Federation signed a
treaty that forbade their own development of similar technology.
