Daga tushen ikonsa a tsakiyar Bhutan, Ugyen Wangchuck ya kayar da abokan hamayyarsa na siyasa kuma ya haɗa ƙasar bayan yaƙe-yaƙe da tawaye da yawa a cikin 1882<unk>85.A cikin 1907, shekara mai mahimmanci ga ƙasar, Ugyen Wangchuck ya yanke shawara a matsayin sarki na ƙasar ta hanyar Lhengye Tshogzim na manyan malamai na Buddha, jami'an gwamnati, da shugabannin manyan iyalai, tare da tsayayyen buƙata ta Gong Ugyen Dorji. John Claude White, Wakilin Siyasa na Burtaniya, a cikin hotunan mulkin mallaka. Gwamnatin Burtaniya ta amince da mulkin mallaka na Bhutan nan da nan, kuma ya zama sabon sarkin Bhutan a cikin watan Yuli na shekara ta 1971, bayan shekaru goma sha shida na mulkin mallaka a tsakiyar Bhutan. A cikin watan Agusta na shekara ta 15 ga watan Agusta na shekara ta 1947, ya sanya hannu a kan yarjejeniyar da aka kulla tare da Majalisar Dokokin Indiya ta Indiya, wanda ya ba da damar yin amfani da mulkin mallaka na Bhutan a matsayin sabon tsarin mulkin mallaka.
Shekaru na 1870