Qatar population was 2.6 million: 313,000 Qatari citizens and 2.3 million expatriates. Islam is the official religion of Qatar. The country has the highest per capita income in the world. Qatar is classified by the UN as a country of very high human development and is widely regarded as the most advanced Arab state for human development. Qatar is a high-income economy, backed by the world's third-largest natural gas reserves and oil reserves. Qatar has been ruled by the House of Thani since Mohammed bin Thani signed a treaty with the British in 1868 that recognised its separate status. Following Ottoman
Nong Saeng District, Udon Thani four sub-districts ("tambon"), which are further subdivided into 38 villages ("muban"). Saeng Sawang is a township ("thesaban tambon") which covers parts of "tambon" Saeng Sawang. There are further four tambon administrative organizations (TAO). Nong Saeng District, Udon Thani Nong Saeng (, ) is a district ("amphoe") of Udon Thani Province, northeastern Thailand. Neighboring districts are (from the west clockwise) Nong Wua So, Mueang Udon Thani, Kumphawapi, and Non Sa-at of Udon Thani Province, and Khao Suan Kwang of Khon Kaen Province. The area of the district was originally part of Kumphawapi District. It was made a minor district ("king amphoe")