Which city is called the 'Diamond Capital of North America'?

Discover Canada records this in one direct sentence. The guide writes: The Northwest Territories (N.W.T.) were originally made up in 1870 from Rupert's Land and the North-Western Territory. The capital, Yellowknife (population 20,000), is called the "diamond capital of North America". The city the test wants is therefore Yellowknife.

Three identifiers anchor the city. Discover Canada commits Yellowknife to THREE specific identifications: capital of the Northwest Territories, population 20,000, and diamond capital of North America. So Yellowknife is identified by political role (territorial capital), demographic size (a small city of 20,000), and economic distinction (diamond-mining hub).

The Northwest Territories has named geographic facts. Discover Canada writes that the NWT was "originally made up in 1870 from Rupert's Land and the North-Western Territory." So the territory has been a Canadian jurisdiction since 1870, predating the modern provinces of Alberta and Saskatchewan (which were carved out in 1905) and Nunavut (carved out in 1999).

Yellowknife sits within Canada's diverse Northern landscape. Discover Canada writes: "More than half the population is Aboriginal (Dene, Inuit and Métis). The Mackenzie River, at 4,200 kilometres, is the second-longest river system in North America after the Mississippi and drains an area of 1.8 million square kilometres." So the NWT — Yellowknife's home territory — combines majority-Aboriginal population (Dene, Inuit, Métis), the country's second-longest river system, and major mineral resources including diamonds. The Northern Territories together — Yukon, NWT, and Nunavut — "contain one-third of Canada's land mass but have a population of only 100,000." So when the test asks the diamond capital of North America, the source-precise answer is the named NWT capital: Yellowknife.

The question is testing whether new citizens know the Diamond Capital of North America. Discover Canada commits to one city: Yellowknife. The right test answer matches that.

The wrong answer choices each substitute a different northern city. "Whitehorse" is the capital of Yukon — but is not the diamond capital. "Iqaluit" is the capital of Nunavut — formerly Frobisher Bay — but is not the diamond capital. "Dawson City" is associated with Yukon Gold Rush history (1890s) — but is not the diamond capital. Only Yellowknife — the source's named diamond-capital city — matches.