Final answer:
Armistice Day became Veterans Day to honor American soldiers from all wars.
Step-by-step explanation:
The relationship between Armistice Day and Veterans Day is that Armistice Day became Veterans Day to honor American soldiers from all wars. Originally, Armistice Day was established to commemorate the end of World War I, which happened on November 11, 1918. However, after World War II and the Korean War, the holiday was expanded to honor all American veterans.