Which of the following is a true statement about slavery?
a. it only existed in the americas.
b. europeans introduced the institution of slavery to africa.
c. slavery already existed in africa before the arrival of europeans.
d. the african form of slavery was identical to the european form of slavery.

Because they are located downstream from turkey on the tigris and euphrates rivers, these two nations are anticipating a reduction in water supply, as a result of 22 dams being built by the southeastern anatolia project. the two nations are a) iraq and iran. b) iraq and syria. c) iran and syria. d) saudi arabia and yemen.