This document discusses terrorism, including defining it as the unlawful use of force against people or property to intimidate governments or populations for political goals. It outlines some terrorist groups like Al-Qaeda, causes of terrorism like religious extremism and poverty, and examples of terrorist attacks over the years such as in Mumbai, London, and Delhi. These attacks have social, political, and economic impacts. Prevention measures discussed include education, security, and unity. Government acts against terrorism are also mentioned.