Green Revolution in India happened because there was a need for increased agricultural yields due to chronic food deficits and famine. Thus, the answer should be d) enable India to feed all of its people.
The result was that tariffs were lowered which bothered lobbyists but had great support from the public. The trusts were slowly beginning to end because of the Federal Trade Commission Act of 1914 and Clayton Anti-Trust Act of 1914 that was meant to end monopolies in businesses. The banks were reformed with the Federal Reserve Act of 1913 which is still used today, only modified.
Currently? probably overpopulation
I'm assuming they both where a ancient native american cultures but both have industrious and neither had written records of their cultures.
Hope This Helps?
Americans feared communism would prevail.