Here are a few sources that gather information on nation states. Some of these are from your textbook.
Intended for international business travelers, Global Road Warrior offers world-class e-content, including more than 8 million words of editorial, over 6,500 color photos and 1,575 country maps, all presented in a consistent 92-category framework for each country. Created by an international team of researchers, cartographers and writers, the database is continually updated.
Nexis Uni™ features more than 15,000 news, business and legal sources from LexisNexis®—including U.S. Supreme Court decisions dating back to 1790—with an intuitive interface that offers quick discovery across all content types, personalization features such as Alerts and saved searches and a collaborative workspace with shared folders and annotated documents.