By: Mike Terrorism Over the past Century, terrorism has evolved from random killings to massive plans for terrorist groups. To understand terrorism you must first describe it. There have been many different definitions of terrorism. The one that truly describes it is; Terrorism can not specifically describe terrorism because people will interpret it differently. Many experts believe that terrorism is an abstract concept with no essence, a single definition cannot account for all the possible uses of the term, many different definitions share common elements, the meaning of terrorism derives from the victim of target. Even with no definite conclusion terrorism can be divided into 5 categories: Simp