If 9/11 was not planned, explain this..

[andruejaysin]

US setting a mine to blow up the
U.S.S. Maine in Cuba starting the spanish-american war. (hope I got the name of the ship correct).

You did. But the damage indicated the explosion came from the powder magazine (at the time power was in bags, rather than prefabricated shells) which rules out either a spanish or american mine. Deliberate sabotage is impossible to rule out, but static electricity is far more likely.