This book brings together recent and original work to illuminate comparisons and contrasts between two former colonies of the British Empire. The contributors include some of the top names in history and political science in Canada and Australia. They cover the entire twentieth century and examine different aspects of Canadian-Australian relations, including trade, civil aviation, military, constitutional, imperial, and diplomatic relations. The comparisons include Aboriginal rights, nation-building, middle powers, and attitudes towards the Empire. This timely volume is well situated in the field of comparative studies, a new and growing area of study. It will be of interest to students and scholars of foreign affairs, the British Commonwealth and its dismantling, constitutional history, and international relations.