Menagerie

Menagerie is an area in Remnant where the Faunus were previously confined by the Human population. According to Dr. Oobleck, humankind was "quite adamant" about forcing the Faunus into the territory prior to the events of the Faunus Rights Revolution.

Given his reference to this situation being in the past and the presence of Faunus in Vale, it seems the war resulted in them winning the right to live outside Menagerie.

Trivia

 * The name "menagerie" refers to a collection of wild animals in captivity, a reference to Menagerie's use as a sort of reservation for the Faunus.