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Domestic and International Common Language Database (DICL)

Published by Office of Economics | US International Trade Commission | Metadata Last Checked: June 25, 2025 | Last Modified: R/P1Y
The database contains index measures of linguistic similarity both domestically and internationally. The domestic measures capture linguistic similarities present among populations within a single country while the international indexes capture language similarities between two different countries. The indexes reflect three aspects of language: common official languages, common native languages, and linguistic proximity across languages.

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