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The over 300 digital maps, charts and videos shared here are original creations by Elya J. Zhang and her undergraduate students. They are visual guides to our research findings as we study the history of sovereign debt, commodity, pandemic, railway, and infrastructure building. Materials can be identified by topic (15 subsections on this site), by keyword (1,400+ tags listed below), or by full text search. Elyadatabase.com is a labor of love for history, geography, and fun learning. We look forward to learning from your feedback and ideas.

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