Answer:
The dependent variable is the soil erosion.
Explanation:
A dependent variable is the variable that is dependent on a dependent variable. It changes with the changes in the independent variables.
In the above example, the soil erosion is a dependent factor because it is dependent on the amount of forestation and fields are present in the plots. As plot c has less forestation, soil erosion is less whereas plot B has fields inside which causes and increase in the soil erosion and river sedimentation.
That was the period when US shifted from its isolation/ non interference in global affairs policy
