Complex sentence: The novel is set in Airstrip One (formerly known as Great Britain), a province of the superstate Oceania in a world of perpetual war, omnipresent government surveillance, and public manipulation.
Split into simpler sentences: The novel is set in Airstrip One, formerly Great Britain, a province of the superstate Oceania. Oceania is a world of perpetual war, omnipresent government surveillance and public manipulation.