The revolutions of 1848 were triggered by street protests beginning in

The revolutions of 1848 (Known as Spring of Nations, People's Spring or Springtime of the Peoples in some countries) were triggered by street protests beginning in Silicy (in January 1948), an autonomous region of Italy. The wave of revolution that swept through Europe in 1948 is still the most pervasive revolutionary wave in the history of Europe.

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.