Canadian Citizenship Practice Test 2026 – All-in-One Guide to Master Your Citizenship Exam!

During WW2, several Commonwealth countries contributed to the Allied air effort. Australia, India, and South Africa were three of these countries. However, the largest and most significant contributor was Canada. Canada's air force was the third largest in the war and played a crucial role in numerous key battles, including the famous Battle of Britain. While Australia, India, and South Africa also made valuable contributions, they were not as extensive or impactful as Canada's. Therefore, C, Canada, is the correct answer.