Which of the following economic elements best set apart the postclassical era from any time before it?
a. international trade spread farther than ever before.
b. human societies first divided themselves into different classes.
c. coin currency was used for the first time.
d. farmers domesticated plants and animals for the first time.

answer; ///i believe that the correct answer is (b)arches and domes; ///

mosques-hypostyle halls with lots of space.towers called minarets flanks the luck

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.