Bhutan’s early history is steeped in mythology and remains obscure. Some of the structures provide evidence that Bhutan as early as 2000 BC. According to a legend it was ruled or controlled by a Cooch-Behar king, Sangaldip, around the 7th century B.C., but not much is known prior to the introduction of Tibetan Buddhism in the 9th century, when turmoil in Tibet forced many monks to flee to Bhutan. In the 12th century, the Drukpa Kagyupa school was established and remains the dominant form of Buddhism in Bhutan today. The country’s political history is intimately tied to its religious history and relations among the various monastic schools and monasteries
The country came to be known as Druk Yul or The Land of the Drukpas sometime in the 17th century. The name refers to the Drukpa sect of Buddhism that has been the dominant religion in the region since that period. The country was first unified in 17th century by Zhabdrung Ngawang Namgyel. After arriving in Bhutan from Tibet he consolidated his power, defeated three Tibetan invasions and established a comprehensive system of law and governance. His system of rule eroded after his death and the country fell into in-fighting and civil war between the various local rulers. This continued until the Trongsa Poenlop Ugyen Wangchuck was able to gain control and with the support of the people establish himself as Bhutan’s first hereditary King in 1907. His Majesty Ugyen Wangchuck became the first Druk Gyalpo (King) and set up the Wangchuck Dynasty that still rules today.