Although almost every country in the world was part of a peace treaty or pact in 1928 what made the treaties weak?

The Kellogg-Briand Pact, also known as the Pact of Paris, was a treaty that attempted to outlaw war (46 Stat. 2343, T.S. No. 796, 94 L.N.T.S. 57). The treaty was drafted by France and the United States, and on August 27, 1928, was signed by fifteen nations. By 1933 sixty-five nations had pledged to observe its provisions.

Explanation:

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.