The development that probably hurt it is the reduction of open range herding. In history, people could just let their cattle roam freely and find food since the plains were huge and nobody lived in them. Nowadays, this can be problematic because there are more and more people and settlements and roads with cars so free range herding has been drastically reduced which cost the herders a lot.
Answer:
electrification, bringing electricity into households
Could you please include a photo of the illustration
The asnwer is A. They enabled people to embrace western good and ideas