Answer:
Osama Bin Laden
Explanation:
Al Qaeda was founded and led by Osama bin Laden (1957-2011), a billionaire of Saudi origin who studied at King Abdul Aziz University.
On September 11, 2001, four commercial airplanes were hijacked, two of which crashed at the World Trade Center, one in The Pentagon and another in Pennsylvania. The US authorities blamed Al-Qaeda for the preparation and financing of the attack following the claim made by Bin Laden himself. Given the refusal of the Taliban regime to deliver it, the US army invaded Afghanistan to find it.
