Question: Write a DTD file that describes documents that contain information about countries: name of the country, its population, and its area. Create an XML file

Write a DTD file that describes documents that contain information about countries: name of the country, its population, and its area. Create an XML file that has five different countries. The DTD and XML should be in different files. Write a program that uses the XML file you wrote and prints:

• The country with the largest area.

• The country with the largest population.

• The country with the largest population density (people per square kilometer or per square mile).

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