On 28 November 1885, the British captured Mandalay, officially ending the Third Anglo-Burmese War in 11 days. But it took until 1890 for the British to subdue all of the various Shan states. Under the British colonial administration, established in 1887, the Shan states were ruled by their saophas as feudatory princely states of the British Crown. The British placed Kachin Hills inside Mandalay Division and northwestern Shan areas under Sagaing Division. In October 1922, the Shan and the Karenni states were merged to create the Federated Shan States, under a commissioner who also administered the Wa States. This arrangement survived the constitutional changes of 1923 and 1937.