ISO 3166-3:2020

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ISO 3166-3:2020 is a part of the ISO 3166 standard that provides codes for countries and territories that no longer exist or have undergone significant name changes. This part of the standard ensures that historical and former geopolitical entities are still represented, offering a way to track or reference places that have been dissolved, renamed, or merged.

"ISO 3166-3:2020" refers to a standard published by the International Organization for Standardization (ISO) that defines codes for representing names of countries that are no longer currently used, essentially listing codes for former country names that have been removed from the standard ISO 3166 since its initial publication; meaning it provides a way to reference historical country names with dedicated codes.