The forest-sub.dta data is on environmental degradation across countries. The dataset contains a measure of deforestation, a measure of democracy (-10 to 10) and a measure of GDP per capita. Scholars in international relations often debate whether the effect of this democracy scale is constant. As a result, some analysts recode the scale to dummy variables for democracy (6 to 10) and autocracy (-6 to -10). The main objective here is to investigate whether splines can capture the effect of democracy on deforestation. Question : Use a scatterplot to examine the relationship between democracy and deforestation. What model do you recommend to describe this relationship? Why? Explain your