Christopher columbus and ferdinand magellan were explorers who sailed for a. england b. spain c. france d. portugal

B. Spain

Explanation:

Christopher Columbus was an Italian explorer, navigator, and colonist. He started to travel by the year of 1492, across the Atlantic Ocean to the Caribbean, Central America, and South America sponsored by the Catholic Monarchs of Castile and Aragon, located in Spain and Ferdinand Magellan was a Portuguese explorer who organised the Spanish expedition to the Indies in the East by the year of 1519.

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.