What action spurred spain, france, the netherlands, and england to begin their own sea explorations

There is multiple reasons. One of those reasons being that those nation's were extremely Catholic. So all these counties were Catholic religion based and their idea was that they needed to spread the faith and religion. It was to them their lives calling and duty. Britian starting spreading out as far as over seas to get out and let the people know and the other nations felt they needed to catch up and started to look at it as a competition instead of the team effort. They believed the more they soreaded the faith out the more God would reward them. That's one of the main reasons that those counties spreaded out, to find economic growth and find their faith.

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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.