Sure, Jack, greed and ignorance have a great deal to do with it. Ignorance produces tribalism... ;-)

Anyway, let's not speak in absolute terms when discussing the world's political problems. It would be a mistake to hold up any one thing and say: "THIS is what's responsible for all the trouble!"

It isn't just one thing. It isn't just two things. It isn't just three things. It's a large number of different things working together in combination that result in the difficulties we are all facing.