Because the Saudi government supported them and because we withdrew from the region after the Soviets left. Remind me why that justifies killing 3,000 civilians.Who was the reason those jihadists were in power and had money?
If you break a serial killer out of jail, drive him to a school and hand him an AK-47, would it be fair to put blame on you for what he did with it or would only the serial killer deserve blame?
I see, now you're denying basic history.
We supported Osama and his pals, you know that but you partisans have to change history in order to remain partisans. Truth be damned. Your hero Reagan supported Osama (dont' worry Carter did too), and it'd be hard to speak the truth and say "My hero supported the terrorist who killed thousands of americans." Better to just lie and live in a fantasy world.
It wasn't justified. What Osama and his pals did was terribly immoral, no one denies that. It's your other heros like Hannity who tell you what others think, rather than listening to what they say, and you go with that.
But it was also horribly immoral to support monsters like Osama, like we did in Iraq, like we're doing in Libya, but you want that policy to remain in place despite it having bit us in the ass for decades.
So your answer is that US policy caused 9/11? Is that your final answer?