It was "mountain ranges in the north and west" that helped India develop for thousands of years in this way, since these mountains were very hard to cross with large armies.
I don't know what the answer is, but I know for sure that it is not B or C. I believe it is A.
Stock Market
Bank Failures
Reduction in Purchasing Across the Board
American Economic Policy
Drought Conditions
Answer:
China-
The sui built the grand canal that was taken by the Tang etc.
Japan-A nominal emperor ruled the empire, shoguns competed for power
Korea- The sila defeated two kingdoms to unite the country etc.
Explanation: