About how many people are killed by the terrorist attacks on september 11th 2001. a 1500 b 3000 c 5000 d 6000

tearing down the berlin wall.

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.