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treaties
Last updated 7/31/2022
territories
Last updated 5/26/2023
Caxcan (territories)
Dakin, K., Parodi, C., & Operstein, N. (Eds.) (2017). Language Contact and Change in Mesoamerica and Beyond.
Wikipedia
Added 6/6/2018, last updated 7/31/2022 *
* older dates may be inaccurate due to tech changes along the way
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