Answer:
a. Obtain: to gain or acquire
b. Ziggurat: a large temple built by the Sumerians.
c. Cultural Hearth: a center where cultures developed and from which ideas and traditions spread outward.
d. Qanat: an underground canal first build by the ancient Persians.
e. Embargo: a ban on trade
f. Cuneiform: wedge-shaped symbols that were pressed into clay tablets.
g. Natural boundary: a boundary created by a physical feature, such as a mountain, river, or strait.
h. Participate: to take part in