Sources and licences
Every cell on CountryPair points to one of the sources below. We check each licence on the publisher’s own page before a table is built, and we use only data whose terms allow it.
CEPII GeoDist
Mayer, T. & Zignago, S. (2011), Notes on CEPII's distances measures: the GeoDist database · www.cepii.fr
Licence: Etalab Open Licence 2.0
Credit line: Source: CEPII GeoDist (Mayer & Zignago 2011), Etalab 2.0
CountryPair own capital coordinates
CountryPair
Licence: own data
Credit line: Source: CountryPair
IANA Time Zone Database
IANA / Paul Eggert et al. · www.iana.org
Licence: public domain
Credit line: Time zones: IANA tz database via Python zoneinfo and timezonefinder
CountryPair computation rule (published in the methodology note)
CountryPair
Licence: own data
Credit line: Source: CountryPair
CountryPair own check against official sources
CountryPair
Licence: own data
Credit line: Source: CountryPair
CountryPair own compilation from official announcements
CountryPair
Licence: own data
Credit line: Source: CountryPair
CountryPair own facts for entities absent from the World Bank (Taiwan: national statistics / IMF; Vatican)
CountryPair
Licence: own data
Credit line: Source: CountryPair
World Bank, World Development Indicators (API, most recent non-empty value per economy)
World Bank · data.worldbank.org
Licence: CC BY 4.0
Credit line: Source: World Bank, World Development Indicators (CC BY 4.0)
LINGACON Language Speakers Index v1.30 — official languages per country
LINGACON Project
Licence: own data
Credit line: Source: LINGACON
Unicode CLDR likelySubtags (language → script)
Unicode Consortium · github.com
Licence: Unicode Licence v3 (permissive)
Credit line: Script data: Unicode CLDR
HCCH status tables of the Hague Conventions
Hague Conference on Private International Law · www.hcch.net
Licence: public status information
Credit line: Source: HCCH status tables
United Nations Treaty Collection — status of multilateral treaties deposited with the Secretary-General (chapters X-10, XI-B-19, XVIII-10, XXI-6, XXII-1)
United Nations, Office of Legal Affairs · treaties.un.org
Licence: public status information
Credit line: Source: United Nations Treaty Collection
BACI — International Trade Database at the Product Level, HS22, version 202601 (years 2022–2024)
Gaulier, G. & Zignago, S. (2010), CEPII Working Paper 2010-23 · www.cepii.fr
Licence: Etalab Open Licence 2.0 (link on the BACI page, seen 2026-09-21)
Credit line: Source: BACI, CEPII (Gaulier & Zignago 2010), Etalab 2.0
Automatic Exchange of Information — activated exchange relationships (CRS, CbC, CARF tables)
OECD (2026) · www.oecd.org
Licence: OECD Terms & Conditions §3 Data: any purpose incl. commercial, with citation; acknowledgment must be passed on (read 2026-09-21)
Credit line: Source: OECD (2026), Activated exchange relationships, accessed 2026-09-21
International Migrant Stock 2024 (POP/DB/MIG/Stock/Rev.2024), Table 1
United Nations, Department of Economic and Social Affairs, Population Division (2024) · www.un.org
Licence: CC BY 3.0 IGO (printed in the file)
Credit line: Source: UN DESA, International Migrant Stock 2024 (CC BY 3.0 IGO)
United Nations General Assembly Voting Data — AgreementScores.csv
Voeten, E., Strezhnev, A. & Bailey, M.; method: Bailey, Strezhnev & Voeten (2017) JCR 61(2) · doi.org
Licence: CC0 1.0 (Dataverse licence field, read 2026-09-21)
Credit line: Source: Voeten, Strezhnev & Bailey, UNGA Voting Data, Harvard Dataverse
International football results from 1872 (results.csv, former_names.csv)
Mart Jürisoo and contributors · github.com
Licence: CC0 1.0 (verified 2026-09-21, GitHub licence field)
Credit line: Match data: martj42/international_results (CC0)
OpenStreetMap road network routed with OSRM (demo server)
OpenStreetMap contributors; Project OSRM · www.openstreetmap.org
Licence: ODbL 1.0
Credit line: © OpenStreetMap contributors, ODbL; routing by OSRM