Greek slaves were owned by , while helots were owned by .

Greek slaves were owned by individuals, while helots were owned by the state.                  

Explanation:

Slavery was common among Athenians as they used thousands of slaves to work in their private homes, factories and mines. Slaves captured in war and came from all over the Mediterranean. Slaves were the property of their master. A slave owner could sell, rent, give or leave them. A slave could have a family but not acknowledged by the state, and the master could divide the family members at per his wishes.

Helots were state-owned slaves. There were very much in practice in the ancient Spartans. They were specified to work in a piece of land. They also forced to work in fields as they were serf.

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.