Qatar officially the State of Qatar is an Arab emirate in Southwest Asia, occupying the small Qatar Peninsula on the northeasterly coast of the larger Arabian Peninsula. It is bordered by Saudi Arabia to the south; otherwise the Persian Gulf surrounds the state. An oil-rich nation, Qatar has the highest GDP per capita in the world according to the CIA World Factbook. Sources say the name may derive from "Qatara", believed to refer to the Qatari town of Zubara, an important trading port and town in the region in ancient times. The word "Qatara" first appeared on Ptolemy's map of the Arabian Peninsula. In English-language broadcast media within Qatarfor example, television commercials for Qatar Airways and advertisements concerning economic development in Qatarthe name is pronounced "KA-tar", with a distinct differentiation between the syllables from the forming of the 't' sound.