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
Udon Thani Udon Thani Udon Thani (, ) is one of the four major cities (Khorat, Ubon Ratchathani, Udon Thani, and Khon Kaen) of the Isan region, Thailand, (known as the "big four of Isan"). It is the capital of Udon Thani Province. Udon's geographical location is approximately 560 km from Bangkok. Udon is a major official and commercial center in northern Isan, Thailand, and the gateway to Laos, northern Vietnam, and southern China. The city's economy was boosted by the proximity to Udorn Royal Thai Air Force Base during the Vietnam War and retains reminders of that time in the form