The tragedy on September 11, 2001, has become a difficult but necessary topic of discussion in schools all across North America. The attack on America is among the most memorable and tragic in modern history. This 12-book series covers the full range of topics and issues needed for meaningful discussion, clear understanding, and hope for the future. It provides accurate, age-appropriate information, puts events in proper perspective, and offers reassurance that democracies are doing what is necessary to make the world safe. New editions contain up-to-date facts and information.