By the early 1500s, what did the Aztecs become because it covered 80,000 square miles that stretched from central Mexico to the Atlantic & Pacific and contained 30 provinces that were ruled by an emperor?

The most powerful empire.

Explanation:

Originally the Aztecs actually are from the Northern part of Mexico before they later were in charge of the central part of Mexico. The Aztecs speak a language which is known as the Nahuatl.

For Aztecs, they are known as the Mexica or Tenochca. They were able to efficiently control the regions such as the central Mexico, Atlantic and Pacific and other thirty (30) provided because they formed an alliance which is known as the Tripple Alliance.

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.