The ideology which creates terrorism is very simple: My ideology is so important that terrorism is useful promotion of my ideology. JCarlin
But what is "my ideology"? Define what specific ideologies might lead to terrorism. Abrahamic believer
"My ideology" is an egocentric belief system that the cabal I lead or am one of the leaders of is the only correct view of the world, and that all must believe the same as the Glorious Leader no matter what the Glorious Leader is passionate about. It may be race, it may be personal power, it may be nation, it may even be God (who talks only through the Glorious Leader). I do not think it is an accident that they all consider themselves to be a Moses figure leading his (so far it has always been a male) people out of oppression. The name doesn't matter, the M.O. is the same. Me and my people are not on top and should be. I will do whatever it takes to get them there, no matter how many die in the process even if they are my people. Terrorism is one of the tactics.
I think most of us can agree on the ideological leaders in history through 1950, not all were political, some were pushing economic empires. Three founded major religions. Others were associated with nation states, Genghis Kahn as an example.
Religious leaders: Moses, Constantine, Muhammad.
Empire Builders: Britain, Spain, Portugal, Post Civil War America.