Memorial Day is a teaching opportunity. Kenneth C. Davis answers the questions below about what to know but perhaps never learned about Memorial Day:

*What do the Civil War and slavery have to do with Memorial Day? 

*Who do we honor on Memorial Day and why is it different from Veterans Day? 

*Who owned the land that became Arlington Cemetery? 

*What did World War I have to do with establishing the national holiday? 

*When was the Tomb of the Unknown Soldier built? 

*What is the significance of the poppy as a Memorial Day symbol? 

*Why have some states marked different Memorial Days?