Found and adapted from the annals of the Apostles of Sune:
The Great Realms, are a continent on the world of Toril and was divided into empires (Tripower, Vector, Sephiroth, Heifong). In the past the cities within these empires were lead by factions. But these factions are no more and power has been consolidated in the hands of the clans. Of which the Tripower Kingdom and the Vectorian Empire are two. Overhead, the Ragnarok - known to many as simply the Rok - sat in the sky. It was a giant meteor that was said to bring destruction and chaos, while some believed it would bring rebirth as well. At one point the Tripower Kingdom created a Makou cannon to destroy the Rok, nicknamed "Stalin's Organ", but it failed and the Rok remained until it fell.
Makou and MagiTek energies are used up to this day to power the realms, although MagiTek is shunned by many. Magic always had a very visible, tangible presence. There were and still are numerous immortals, some of which make appearances in the Realms and others which do not. Travel over great distances is still accomplished by magical means or by airships.