Very little is known about its origins, military deployment, population centers, or its affiliation with the UFP after the original encounter. The first major encounter between the two governments occurred in 2266 when the USS Enterpriseapparently crossed into First Federation space and destroyed a marker buoy.
Following this the Enterprise was pursued by what they later learned was the First Federation's flag ship the Fesarius. Charged with violating First Federation space the Enterprise was threatened with destruction, but after a series of bluffs and counter-bluffs it was discovered that the encounter had been designed by the captain of the Fesarius, Balok. Once they met face to face a cultural exchange was proposed and Dave Bailey of the Enterprise remaining aboard the Fesarius.