Confederation of Canada

On July 1, 1867, the Province of Canada, Nova Scotia, and New Brunswick formally merged to create the Dominion of Canada, a self-governing territory within the British Empire. The union was enabled by the British North America Act, passed by Westminster in March 1867, which established a federal system with a bicameral Parliament in Ottawa. John A. Macdonald, the Conservative politician who had orchestrated much of the confederation effort, became the dominion's first Prime Minister. The move was driven partly by economic concerns—the American Civil War had disrupted North American trade—and partly by desire among colonial elites for unified governance and westward expansion.

The path to confederation was neither inevitable nor swift. Confederation discussions had begun in earnest after the Fenian Raids (1866), when Irish-American veterans attacked Canadian territory, exposing the colonies' military vulnerability. These raids convinced skeptics that unity was necessary for defense. The Charlottetown Conference (September 1864) and the Quebec Conference (October 1864) hammered out the constitutional details that would eventually become the BNA Act. Prince Edward Island and Newfoundland initially refused to join, though PEI would enter confederation in 1873. The debates were fierce: French-Canadian politicians like George-Étienne Cartier negotiated protections for French language and Catholic education rights, while Maritime representatives worried they'd be eclipsed by the larger Canada East and Canada West blocs.

The newly minted dominion inherited significant structural tensions. The federal system divided powers between Ottawa and the provinces, though the balance remained contested. The promise of a transcontinental railway—a Macdonald priority—would stretch resources and tempt political corruption for decades. The Dominion Lands Act, passed the same year, opened the western territories for settlement and resource extraction, but indigenous peoples had no say in these arrangements. By 1867, Canada had roughly 3.5 million people; the vast majority lived within 200 miles of the American border.

Confederation was framed as a fresh start for a new nation, though in practice it consolidated existing power structures. Britain retained control of foreign policy; the Governor General represented the Crown. Macdonald's vision of a strong central government clashed with provincial ambitions almost immediately. Yet the constitutional framework proved durable. Despite internal conflicts over tariffs, religious education, and resource rights, the dominion held. By century's end, Canada had absorbed Manitoba (1870), British Columbia (1871), and Prince Edward Island (1873), and the CPR had linked coasts.