IlClan Era Essay
History
In 3150, the Republic of the Sphere was crumbling inside of the Fortress Republic after various in-fighting between, Inner Sphere, Clan, and various Republic splinter-faction both within and outside of the Republic. An unidentified clan would take this opportunity and make a race towards Terra to restore the Star League with a Clan-based styling.
Bibliography
Second Succession War (Sourcebook)
Technical Readout: Clan Invasion
Technical Readout: Jihad