Ancient Chinese civilizations thought they lived at the center of the world because . they had no knowledge of civilizations in India, Egypt, Greece, or Rome

they called themselves the people of Middle Earth

China’s rivers allowed civilizations to spread along the Huang River

destructive floods brought life and death to the people of China

Correct answer is they called themselves the people of Middle Earth .

Explanation:

First option is not correct as they knew about the existence of this civilizations, especially the Indian, as they have traded with them a lot.

Second option is correct as they believed they were living in the center of the world, and that the natural barriers are dividing them from the rest of the world.

Third option is not correct as the Huang River was were the civilization developed.

Last option is not correct as this has nothing to do with their beliefs about their location.

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.

i think it's b or c hope this