Geass World

Geass World is a nickname for the unnamed world where Code Geass: Lelouch of the Rebellion takes place.

Overview
The Geass World is very similar to real world's earth, having the same geography and even the same history until certain point, only changing with the great ascension to power of the Holy Empire of Britannia.

Before Zero
The Geass World was mainly divided amongst three international superpowers: the Holy Empire of Britannia, the Chinese Federation, and the Euro Universe. Australia has remained independent, and is not a major player in international politics, instead becoming a neutral state akin to real-world Switzerland. The Middle Eastern Federation is not a supernation, however, it is believed to have warm relationships with the E.U. and also being fairly democratic. The M.E.F. is conquered quite quickly by Britannia and they soon afterwords become an imperial colony area and is likely restored to international status with the removal of the area system by Emperor Lelouch.

After Zero
Lelouch vi Britannia managed to change the entire world as Zero, creating the United States of Japan and, later, the United Federation of Nations. Lelouch even became emperor of Britannia and destroyed both the area and the class systems. For the sake of his master plan, Emperor Lelouch died after conquering the world, at the hands of the new Zero, Suzaku Kururugi.

History
The fictional history of the Geass World differs significantly from real-world history, primarily in the outcomes of various famous battles. The American Revolution is said to have been crushed at the Siege of Yorktown, thus allowing the development of the Holy Empire of Britannia in stead of the United States of America. Other differences also include the appearance of materials like sakuradite and immortals like C.C. Another main difference would be the calendar the world goes by. Britannia uses a calendar based on the ascension of the first Celtic superking known as Acension Throne Britannia or A.T.B. This event occured in 55 B.C. making the A.T.B claendar 55 years ahed of our own. So the events in Code Geass while taking place in 2017 and 2018 A.T.B. actually take place in 1962 and 1963 A.D.

Geass
Geass is a mysterious ability which certain people can bestow upon others; C.C. is the most prominent character who grants the power of Geass. The form the Geass takes is different in each individual. C.C. calls Geass the Power of the King while Lelouch calls it a form of wish. It is represented by a glowing, bird-shaped symbol.