You didn’t upload a picture of the map.
The best example of a secondary source document that's useful in studying historical facts is a newspaper article written on or the day after an event occurred. This will show that the event did take place and can't be forged.
Human capital is the economic value of the abilities and qualities of labor that influence productivity. These are qualities like education, health, and on-the-job training.
The first answer is 3. The next part of the article proves it.
A. Lower-class mestizos or Indian peasants.
For future reference, revolutions generally happen when the lower class is unhappy.