On what date was the Dominion of Canada officially born?

Discover Canada records this date with no ambiguity. The guide writes: The British Parliament passed the British North America Act in 1867. The Dominion of Canada was officially born on July 1, 1867. The exact date the test wants is July 1, 1867.

The legal vehicle was the British North America Act passed by the British Parliament. Discover Canada notes the legacy of the date in everyday Canadian life: Until 1982, July 1 was celebrated as "Dominion Day" to commemorate the day that Canada became a self-governing Dominion. Today it is officially known as Canada Day. So the same calendar date — July 1 — has been a national day for more than 150 years, even though the name has changed.

The four founding provinces on that day, named in Discover Canada's description of Confederation, were Ontario, Quebec, New Brunswick and Nova Scotia. The Province of Canada — the 1840 merger of Upper and Lower Canada — was split into the new provinces of Ontario and Quebec, and joined with the two Maritime colonies to form the new country.

The first Prime Minister of that country was Sir John Alexander Macdonald, called by the guide "a Father of Confederation," who became Canada's first Prime Minister in 1867. Discover Canada places his portrait on the modern $10 bill and notes that Parliament has recognised his birthday — January 11 — as Sir John A. Macdonald Day.

The question is testing whether new citizens can match the year of Confederation with the exact day. Discover Canada commits to a single date — July 1, 1867 — and explains why it matters: it is the day Canada "became a self-governing Dominion."

The other answer choices each fall close to but not on July 1. The June and August variants for 1867 do not appear in Discover Canada's account at all. January 1 of the following year would mean a delayed start, which the guide does not describe — Discover Canada says the Dominion was officially born on July 1, 1867, the same day as the Act took effect.