1999
In 1999 the Northwest Territories was reduced to its current size - and the notion of the 'districts' was abolished - with the creation of the Canadian territory of Nunavut. The former District of Keewatin, most of the Arctic Islands of the District of Franklin, and a northwest portion of the District of Mackenzie now form Nunavut, with the remainder of Franklin and the majority of Mackenzie forming the current version of the Northwest Territories.
Read more about this topic: Districts Of The Northwest Territories