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Hierarchie (hierarchie.leandro-sierra.com) is a free, educational world atlas for exploring countries, governments, leaders, cities, international relations, tectonic structures and historical epochs. Access to all content is free.
The site is funded through advertising (Google AdSense) and affiliate links (tourism, education).
The source code of Hierarchie is the property of Léandro Sierra. Geographic data comes from open-source, freely licensed sources: Natural Earth (public domain), OpenStreetMap (© OSM contributors, ODbL), RestCountries (MPL 2.0), Wikidata (CC0), GeoNames (CC BY 4.0), World Bank (CC BY 4.0).
Reproduction, modification or publication of original elements of the site without prior written consent from Léandro Sierra is prohibited.
Information published on Hierarchie is provided for educational and informational purposes only. While we strive for accuracy, Léandro Sierra cannot be held liable for errors or omissions. Data is regularly updated but may not always reflect the most current political situation in certain regions.
This site does not constitute legal, political or official advice. For important decisions, please consult official sources (United Nations, national governments, national geography institutes).
This legal notice is governed by French law. In the event of a dispute, after an attempt at amicable resolution, the French courts shall have exclusive jurisdiction.