 Complete the following phrase:  During its early years, as Örgöö anglicised as Urga, it became Mongolias preeminent religious centre and seat of the Jebtsundamba Khutuktu, the spiritual head of the Gelug lineage of Tibetan Buddhism in Mongolia. Following the regulation of Qing-Russian trade by the Treaty of Kyakhta in 1727, a caravan route between Beijing and Kyakhta opened up, along which the city was eventually settled. With the collapse of the Qing Empire in 1911, the city was a focal point for independence efforts, leading to the proclamation of the Bogd Khanate in 1911 led by the 8th Jebtsundamba Khutughtu, and again during the 