Final answer:
Canada's role in global affairs has changed since WWI, with an increased influence and power.
Step-by-step explanation:
Canada's role has changed since WWI in terms of increased influence and power. Before WWI, Canada was still considered a dominion of the British Empire, and its role on the global stage was relatively limited. However, after participating in the war and making significant contributions, such as the Battle of Vimy Ridge, Canada's status and reputation grew. It gained more autonomy and recognition as a nation, and its involvement in international affairs expanded, including joining the League of Nations and later the United Nations.