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
Country house opera Country house opera Country house opera is opera performed at a country house, whether in the house itself, in the grounds, or in an adapted or purpose built theatre on the grounds. It is a feature in particular of the English summer. Country house opera is usually initiated by private enthusiasts, and relies almost exclusively upon private funding. This distinguishes it from the UK's state subsidised opera companies which, like most opera houses around the world, are based in city centres. Black tie is often "de rigueur", in contrast with the Royal Opera House in London and other city operas