Data sources
Population and GDP: World Bank figures from the DataHub datasets. Population is the 2025 value, GDP is mostly 2023 in current US dollars. GDP per person divides GDP by that year's population.
Literacy: CIA World Factbook, snapshot from November 2020. The survey year differs by country (shown next to each value) and many high-income countries do not report it. Taiwan population comes from the same Factbook snapshot.
Area and capitals: mledoze/countries. Imagery: day and night textures bundled with the three-globe examples (NASA Blue Marble and Earth at Night style). Borders: Natural Earth via world-atlas.
Flags: country-flag-icons. Cities: GeoNames, every city above 500,000 people plus each national capital. Trip times are estimates from straight-line distance, not a routing service.