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Terrorism has existed in many forms throughout history, but never before has it posed such a grave threat to our civilization. As we witnessed with the attacks carried out against the United States on September 11, 2001, along with the persistence of those terror organizations hereafter to facilitate assaults against democracy-based countries, a greater understanding of these groups is necessary in anticipating the threats they pose.

To understand the terrorist mindset that has evolved from the Middle East region, the region from which today's greatest threats stem, we must first examine the historical background that set the stage for the events that would unfold over several generations. These events originate as far back as biblical times all the way . Our hope is this comprehensive reference will aid in disaster preparedness and threat-mitigation education.

Send your comments and suggestions and help us keep this list accurate and up-to-date. Please let us know if you see any inaccurate information, or if you believe we have missed a significant terrorist incident. Content is judged for inclusion based on the damage/casualties produced and its significance in history.