Summary: On September 11, 2001, Americans witnessed the worst tragedy our country has ever seen. The world trade center, in New York City, disappeared that day as terrorists flew planes into the twin towers killing and injuring thousands of people. Left in its place was a massive pit of rubble and death known as ground zero. Shortly after the attack, planning began on the rebuilding of a new world trade center. In addition to the new buildings, it would include a memorial for all the lives lost on that tragic day. Today, the world trade center rises once again above lower Manhattan. It remains a symbol of freedom strong enough to heal and rebuild what terrorists knocked down! Photographs, facts about the attacks, sidebars with key information, and places to visit at the new center are all included in this fascinating book! This title will allow students to explain events, procedures, ideas, or concepts in a historical, scientific, or technical text, including what happened and why, based on specific information in the text