D. The US still had to defeat Japan.
It is "C. the power to make treaties" that requires a 2/3 vote from the Senate, since the Founding Fathers wanted to ensure that the United States only made such treaties with reliable nations.
A. Partitition of India and Pakistan
B. Establishment of the caste system
C. British colonization of the Indian subcontinent
D. Gandhi's Salt March
In order: B-C-D-A
If they had a better ruler that was more prepared to take over and listen to the people's ideas, things could have changed.