Cathaysia

Cathaysia, officially the Union of Cathay Council States (Cathaysian: ᠬᠢᠲᠠᠳ ᠬᠤᠷᠠᠯ ᠬᠣᠯᠪᠤᠭᠠᠲᠤ ᠤᠯᠤᠰ, Qitad Qural Qolbuɣatu Ulus), is a sovereign multiethnic federation in East Asteria. Covering an area of 12,751,269 km², Cathaysia is the largest country in the world, as well as one of the most populous. The country is one of the world's most sparsely populated and urbanised. About half of the country's total area is either forested or steppe grasslands, concentrating a large portion of its 237.44 million population on the eastern portion's fertile river valleys and warm coastlines, as opposed to its larger and sparse western portion.

Tenzan is a member of the International Charter (IC) and holds a permanent seat on the International Security Council (ISC). It is a founding member of the Worldwide 15 (W15).