This is what i found. hope this helps!
The answer is B
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It would be the "joint occupation" policy that allowed people from both Britain and the United States to settle in Oregon country, since this was thought to be the most economically advantageous for the region.
The initial thrust was given by the leaders of Congress and Khilafat movement. The main reason for the movement was high rent, which was generally higher than 50% of recorded rent in some areas. Oppression by thekedars who were entrusted to collect rent and practice of share rent also contributed to this movement.