September 11, 2001, is a day that is engraved in the minds of people all around the world, even if they were too young to remember that day themselves. The horrible terror attacks on that day changed the way the U.S. government dealt with terrorism and ushered in a new age of security. In this book, students will learn about the attack, which killed 189 both on Flight 77 and on the ground, as well as the ramifications of the attack. Their reading will be supported with a glossary for unfamiliar words and a further reading section to encourage deeper learning of the topic.