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
Roman Catholic Diocese of Udon Thani On December 18, 1965 the Prefecture Apostolic was elevated to a diocese. The "Cathedral of Our Mother of Perpetual Help" (Thai: อาสนวิหารพระมารดานิจจานุเคราะห์) is located in Udon Thani town. Roman Catholic Diocese of Udon Thani The (Roman Catholic) Diocese of Udon Thani ("Dioecesis Udonthaniensis", Thai: สังฆมณฑลอุดรธานี) is in northeast Thailand. It is a suffragan diocese of the archdiocese of Thare and Nonseng. The diocese covers an area of 50,046 km², covering five provinces of Thailand: Khon Kaen, Loei, Nongbua Lamphu, Nong Khai, and Udon Thani. As of 2001, of the 5.3 million citizens, 5,612 are members of the Catholic Church. It