Canada participated in both World Wars because of its membership in which group? the Commonwealth the UNNAFTAthe League of Nations

Canada participated in both World Wars primarily because of its membership in the Commonwealth.

The Commonwealth of Nations, which was a political association of mostly former territories of the British Empire, played a significant role in Canada's decision to enter both World War I and World War II. Canada was automatically involved in the wars when Britain declared war, reflecting its status as part of the British Empire at the time.

While the United Nations (UN) and the North American Free Trade Agreement (NAFTA) are important in their own right, they were not established until after World War II, and therefore did not influence Canada's involvement in the World Wars. The League of Nations, while an early attempt at international diplomacy and cooperation, was also not the primary reason for Canada's participation in these conflicts.

Thus, the most accurate answer to the question is the Commonwealth.