This document provides an overview of key concepts related to nations, states, and nation states. It defines a state as an organized political community under a government, while a nation is a large group of people united by a common culture or identity inhabiting a territory. A nation state is a state derived from representing and serving a sovereign nation. The document then discusses examples like the UK and gives literature recommendations for examining issues of national identity, such as novels set in England, the Caribbean, and Afghanistan.