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In this section you have learned a great deal about coding, and the basics of how to get your data into a map. You have also learned how to display these data in useful ways with the thematic map, and along the way you have done some basic analysis of the relationships the data show when examined in a geographic context. You can see already the powerful way relationships and the differences across space and geographic, political, or administrative boundaries can be shown on these maps. But this is only the basics; you can now use the techniques you have learned to produce some very powerful and interesting maps that address public policy, history, social relations, and economic and political change-at the neighborhood level, the city level, the state level, the national level, and across the world.