Which of these items did the united states export in the late 19th century? answers?

i would think it's industries and hydroelectric power

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.