Explain the concept of political geography how can you see signs of political geography on a map?

depending on what kind of map for example a pltical maps works in many ways this iss how it works it shows the areas and places the democratics and the repbulcicans reside for example if   texas chooses trump for president there a republican state and if   califronia chooses hillary there a democratic state.

it increase by 12% a year from 1812-1820