Here's why:
* Recruitment: The poem was a powerful call to arms, urging the citizens of these countries to join the war effort and fight for the freedom that the fallen soldiers had sacrificed their lives for.
* Empathy: The vivid imagery and emotional appeal of the poem aimed to generate empathy and a sense of responsibility in those who were not yet directly involved in the conflict.
* Patriotic sentiment: The poem tapped into the existing patriotic sentiments of the time, emphasizing the importance of defending democracy and liberty.
While the poem resonates with people from all over the world who have experienced loss and sacrifice, its initial target audience was clearly the neutral powers of the United States and Canada, urging them to enter the war and honor the memory of the fallen.