In the 1770's, fewer farmers were needed in Britain because of machines and new techniques

In the 1770s, fewer farmers were needed in Britain because of machines and new techniques, so out-of-work farmers 1-started their own machine repair businesses in rural areas. 2-moved to the cities where there were more job opportunities.

Explanation:

the graphs indicate that few people in bolivia work in industry, as that is the least expressive sector shown in the respective graphic.

food chain i would say only because there is competition on getting food and survival