Followers of al-qaida justify their terrorist attacks on the united states on september 11, 2001 by declaring that the saudi arabian government is also under attack arguing that saudi culture has corrupted americans pointing to the u. s. military presence on islamic soil pointing out that the united states does not buy enough saudi oil

I'm pretty sure it's C: "pointing to the U.S. military presence on Islamic soil" =)

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.

these civilizations were located around fertile rivers, where they could produce an abundance of crops