Answer:
Correct answer is the center of a huge trading empire.
Explanation:
The center of a huge trading empire is the correct answer because it refers to a huge empire that was a center of trade in the region between 11th and 15th Century.
B is not correct as Shaka Zulu was a military leader on the soil of todays South Africa, known as Zulu Kingdom.
C is not correct as the first hominid named Lucy was found in Ethiopia.