Districts of the Northwest Territories until 1920, but with no population to administer, this district designation was effectively unused after 1912. The three remaining districts continued to be used for a number of decades, but as control over the territory was moved from departments of the federal government to a centralized government in Yellowknife starting in 1967, they began to have far less use. Although the Districts of Franklin, Mackenzie and Keewatin continued to appear on many maps (and were technically still extant), by the 1980s the actual practical governance of the Northwest Territories was divided into four administrative regions: Inuvik, Fort Smith, Keewatin and
Yellowknife Yellowknife began with the discovery of diamonds north of the city in 1991. The last of the gold mines in Yellowknife closed in 2004. Today, Yellowknife is primarily a government town and a service centre for the diamond mines. On April 1, 1999, its purview as capital of the NWT was reduced when the territory of Nunavut was split from the NWT. As a result, jurisdiction for that region of Canada was transferred to the new capital city of Iqaluit. Consequently, Yellowknife lost its standing as the Canadian capital city with the smallest population. Yellowknife is on the Canadian Shield,