There was a power shift in the Forbidden City as well as a Emperor change. Political interest focused to internal matters rather than Foreign interests. (I hope this helps)
The answer that I have for this question is A
Answer: Crop rotation
Explanation: crop rotation is a farming practice which employs a techniques of planting different crop types on a piece of land in successive manner. Growing corn on a piece of land in odd number of years and then soya beans on the same piece of land is a typical scenario of crop rotation practice.
Crop rotation practice is employed for a number of reasons which include ; Erosion control, Reduction parasite , weeds and diseases caused by plant pathogens. Crop rotation is also used to maintain soil fertility and ultimately boost crop yield.
It’s letter C, bc that is the only answer that shows her as an influential American civil right activist