The Conscription Crisis of 1917 was a political and military crisis in Canada during World War I. It was mainly caused by disagreement on whether men should be conscripted to fight in the war, but also brought out many issues regarding relations between French Canadians and English Canadians. The vast majority of French Canadians opposed conscription; they felt that they had no particular loyalty to either Britain or France. Led by Henri Bourassa, they felt their only loyalty was to Canada. English Canadians supported the war effort as they felt stronger ties to the British Empire. On January 1, 1918, the Unionist government began to enforce the Military Service Act. The Act caused 404,385 men to be liable for military service, from which 385,510 sought exemption.

Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's second-largest country by total area, with the world's longest coastline. Its border with the United States is the world's longest international land border. The country is characterized by a wide range of both meteorologic and geological regions. It is a sparsely inhabited country of 40 million people, the vast majority residing south of the 55th parallel in urban areas. Canada's capital is Ottawa and its three largest metropolitan areas are Toronto, Montreal, and Vancouver.