characterized by an increasingly powerful central government and the beginnings of infrastructure development. Bhutan also established its first diplomatic relations with India under the bilateral Treaty of Friendship, largely patterned after the prior Treaty of Punakha. The Third King Jigme Dorji Wangchuck (r. 1952–1972) ascended the throne at the age of 16, having been educated in England and India. During the reign of the Third King, Bhutan began further political and legal reforms and started to open to the outside world. Notably, the Third King was responsible for establishing a unicameral National Assembly in 1953 and establishing relations with Indian Prime Minister Jawaharlal Nehru in 1958. Under Jigme Dorji Wangchuck, Bhutan also modernized its legal codes. Democratization under the Wangchucks The Third King died in 1972, and the Raven Crown passed to the 16-year-old Jigme Singye Wangchuck. The Fourth King was, like his father, educated in England and India, and had also attended Ugyen Wangchuck Academy at Satsham Choten in Paro. Reigning until 2006, the Fourth King was responsible for the development of the tourism industry, Gross National Happiness as a concept, and strides in democratization including the draft Constitution of Bhutan. The later years of his reign, however, also marked the departure of Bhutanese refugees in the 1990s amid the government's driglam namzha policy (official behaviour and dress code) and citizenship laws that were overzealously enforced by some district officials. To the surprise of the Bhutanese public, the Fourth King announced his abdication in 2005 and retired in 2006, handing the crown to his son Jigme Khesar Namgyel Wangchuck. Jigme Khesar Namgyel Wangchuck assumed the throne as the Fifth King in 2008 as the kingdom adopted its first democratic Constitution. Genealogy Below is an extended patrilineal genealogy through the present monarch. See also List of rulers of Bhutan History of Bhutan Politics of Bhutan Penlop of Trongsa Succession to the Bhutanese throne Notes References External links Official site (archived) Bhutanese monarchy