Country numbers
Country numbers: sources and notes
The country activities use a small, reviewed classroom pack rather than a live API request in the game. That keeps every round stable, printable, and easy to check.
Primary sources
World Bank Open Data
Country names and capitals come from the country API. Population and land area come from the corresponding indicator endpoints. The links below are the source endpoints used for the reviewed pack.
- World Bank country metadata Names, ISO codes, capitals, regions, and coordinates.
- World Bank population indicator Population values and their source years.
- World Bank land-area indicator Land area in square kilometres and its source year.
Country facts use World Bank country and indicator data, licensed under CC BY 4.0. Population and land area are the latest reviewed values shown with their source years. Read the World Bank data licence.