Which four colonies initially joined together to form Canada?

The correct answer identifies the initial colonies that came together to create the Dominion of Canada in 1867. Ontario, Quebec, Nova Scotia, and New Brunswick were the original provinces that united to form Canada. This union was part of a larger effort to create a stronger and more cohesive political and economic structure in response to various regional challenges and pressures, including the need for defense and improved trade.

The choice of these four provinces reflects their geographic and demographic significance at the time, with Ontario and Quebec representing the majority of the French and English populations, and Nova Scotia and New Brunswick being important maritime regions. This foundational union laid the groundwork for future expansions and the eventual inclusion of other provinces and territories.

The other options contain provinces that either didn't exist as recognized political entities at the time of Confederation or were not among the original four colonies that joined in 1867. British Columbia and Alberta were added later, while Manitoba and Prince Edward Island entered the Confederation after the initial formation, showcasing the gradual growth of Canada as more regions recognized the advantages of joining the Dominion.