What was the biggest challenge in foreign policy facing us presidents in the 1990s? . a. the fall of soviet communism. b. the rise of unilateralism. c. the terrorist attacks on the united states. d. the development of china's military

after the aryan's settled in india they changed for the better i bellieve they changed from nomads having to keep moving to being farmers   they were aswell avaible to turn the ganges river into farmland.   which is great they added a big affect on farming as we know of it today.

the answer is d because for c the actors can't love acting for the other's audience their not even in the same show, it can't be b either because the question is talking about the actors not the audience, and it can't be a because   it's not specific enough