What evidence suggests that Great Zimbabwe was a great commercial center?
A. Artifacts such as beads from India and porcelain from China have been found among the ruins.
B. Architecture similar to Zimbabwe's Great Stones houses has been found in China and India.
C. Travelers who journeyed through Great Zimbabwe commented on the kingdom's wealth.
D. Oral histories describe Great Zimbabwe as a great commercial center.

where are the statements?

answer: the correct answer is c.

explanation:

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."

the answer should be a. the sui empire, the tang empire extended from korea in the west to manchuria in the east.