This work investigates the complex political, social, and economic factors that necessitated the confederation of the British North American colonies between 1857 and 1873. W. L. Morton, a prominent Canadian historian, utilizes extensive archival research and primary government documentation to construct a detailed analysis of the transition from colonial status to a unified dominion. The text argues that the union was not merely a product of external pressure from the United States or Great Britain, but a deliberate internal response to the administrative and developmental challenges facing the disparate provinces.

Historians and scholars of Canadian political development frequently cite this work as a foundational text for understanding the Confederation era. Readers often note the academic density of the prose, which provides a rigorous and comprehensive account of the period's legislative complexities.