What is the most important effect of the fact that there is no friction between maglev trains and the ground

Maglev is known as magnetic levitation. It's the scenario where a train uses magnetic for it's movement between it and the rail track

Explanation:

Maglev is known as magnetic levitation. It's the scenario where a train uses magnetic for it's movement between it and the rail track. One of the purpose of this is to help reduce friction. The magnets keeps the train afloat above the track, you'll notice the train looks suspended a little above the rail track.

They do require a high strength of electromagnetic force to keep the train suspended for the total movement. The train could run as much as 550 - 600mph

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.

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.