Omanis (Arabic: الشعب العماني‎) are the nationals of Oman. Omanis have inhabited the territory that is now Oman. In the eighteenth century, an alliance of traders and rulers transformed Muscat (Oman's capital) into the leading port of the Persian Gulf. Omani people are ethnically diverse; the Omani citizen population consists of many different ethnic groups. The majority of the population consists of Arabs, with many of these Arabs being Swahili language speakers and returnees from the Swahili Coast, particularly Zanzibar.