American intelligence officials immediately suspected the al-qaeda terrorist network, led by ayatollah khomeini khalid sheikh mohammed osama bin laden, was behind the september 11 attacks

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.

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.