Alright so what it looks like is that you choose one of the sentences from the box up top and put them in the correct spot.
Example: "Increase in capitalism as a major force in American Society" would go into Political since its talking about a political subject, capitalism.
2nd Example: "Machines replace manual labor, increasing production capacities." would go into Economic since its talking about Economic views, how that the Labor is decreasing while production is increasing.
I hope this helps!