What caused China to stay isolated for so many years? A. natural barriers of mountains, deserts and oceans

B. wars among neighboring countries

C. lack of good transportation

D. illness and disease

A. natural barriers of mountains, deserts, and oceans

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.

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modern american cars are not available due to trade restrictions