What do you think hoover meant by "the president . . must interpret the conscience of america

A president must look beyond what he knows and what he has heard of his country.

Explanation:

A president must understand that not all the problems of a nation are evident and visible. Sometimes the people who are suffering are not able to speak or do not have the facilities to ask for help for themselves or their community. In this way, the president should interpret the silence of some places and know his territory in order to be able of analyzing and solving different problems in his country.

so they can defeat there oppenent

hello there!

the graphics that you have attached within the question, indicates that few people in bolivia work in industry according to its labor force.

however, the graphic that is on the right side of the picture shows the gdp sector in bolivia. this gross domestic product is a macroeconomic magnitude   that shows the monetary value of all finished goods and services within a country's borders in a specific time period. in this case, the graphic is showing the monetary value in each sector -agriculture, industry and services- of bolivia in 2012.

so, although the first graphic located at the left side indicates that not so many people work in industry, this is the second most important sector according to the gdp metrics because of the monetary value that impacts on its country. it does not need to be the most valuable one. if it makes an impact on the country's economy, it will be definitely crucial to it.