Due to 11th century Christian crusades, The Islams used a suicidal terrorism to try and defend themselves against the crusadors.

They ketp this system for years to come. They used this this tactic agaisnt anyone who was opposed their way of life or anyone that betrayed the islamic ways.

the largest known Islamic terrorist group and responsible for the 9/11 attacks is Al-Qaeda lead by Osama Bin Ladin.