A. trans-Saharan slave trade
B. existence of oases in the deserts
C. presence of large quantities of crude oil
D. emergence of important trading routes
Correct Answer:
Option D – emergence of important trading routes
A. trans-Saharan slave trade
B. existence of oases in the deserts
C. presence of large quantities of crude oil
D. emergence of important trading routes
Correct Answer:
Option D – emergence of important trading routes
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