I dont even know how to explain this so just try your best.

origin means

the point or place where something begins, arises, or is derived.

iron curtain means

a notional barrier separating the former Soviet bloc and the West prior to the decline of communism that followed the political events in eastern Europe in 1989.

communism means

a political theory derived from Karl Marx, advocating class war and leading to a society in which all property is publicly owned and each person works and is paid according to their abilities and needs.

hi friend   look late me tall   you with my experience first politic because this subject   it is more politic than be religious   and also give you my experience in islam

first   the islam it is not religion order to kill for we be clear .

so bin laden he not was man of religion   for he use they taught sound islamic theology.

osama bin laden he was influenced by mullah mohammad omar, a very radical manosama bin laden's little understanding of religion has made osama bin laden's speech radical and deviated from the teachings of islam

so the answer > they used radical persuasive rhetoric

i think the answer is a and i hope this ; ))