Final answer:
The first version of Canada's food guide was titled 'Rules of Health and Long Life,' released in 1942. It became officially known as 'Canada's Official Food Rules' in 1944, aimed at aiding the health of Canadians during World War II.
Step-by-step explanation:
The first Canada's food guide was originally called 'Rules of Health and Long Life' and was released in 1942 during the Second World War. However, the more well-known guide that many Canadians would recognize as the first official Canada's food guide was called 'Canada's Official Food Rules' and was released in 1944. The intent behind this guide was to help improve the health of Canadians during the wartime period, when rationing and food shortages were common. Over the years, the guide has evolved, responding to the changing needs and circumstances of the population, including the introduction of TV dinners in 1953 that heavily influenced the food industry.