Which of the following best describes the expansion in total railway line kilometers by 1850 in countries that possessed zero kilometers of railroad lines in 1830 ?

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.