Explain how national boundaries can impede cultural interaction and economic exchange. b. study the map above. answer the following questions: • identify the supranational entity shown on the map. • discuss how this supranational entity addresses the issues noted in part a. c. how has this map changed over time? what map feature indicates that it might change again?

National boundaries impede cultural interaction and economic exchange because they make it more difficult for people to interact with those of other countries. Therefore, products are traded less, people travel less and there is less communication when a boundary is in place.The supranational entity is the European Union.The European Union tries to reduce this division by introducing free mobility among the member states of the union.It is clear that this map has changed over time when we look at the key. Some countries are members, while other are not. It is likely that this will continue to change in the future.