Canadian pride flew highest on the Avro Arrow, the most advanced superiority fighter of its time.
Suddenly, and at the pinnacle of its success as the best fighter interceptor design, the Canadian government cancelled the program, all five working protortypes were cut up and dismantled, all engineers and workers were laid off, and the future of Canadian aeronautical industry was frozen. There was no reason provided for the stoppage of the project. People who worked in the Arrow program were left with their own speculations.
I may provide you with a couple of novel reasons why the program was cancelled, but you should not take these as gospel.
Let me say that with all the record breaking performance of the Avro Arrow, it may have incurred the belief that if war finally comes, Canada will have to bear the brunt of the attack on North America and will provide the first line of defense for the U.S. Consequently, the first target will be the sites that are involved in the manufacture of the Arrow interceptors. Canada would have lost its cherished status of a neutral country.
The second reason will have to be related to the canadian agricultural products, most particularly wheat.