ISO 3166
ISO 3166 is a standard published by the International Organization for Standardization (ISO) that defines codes for the names of countries, dependent territories, and special areas of geographical interest. The standard provides three sets of country codes: alpha-2, alpha-3, and numeric codes. Alpha-2 codes are two-letter country codes, alpha-3 codes are three-letter country codes, and numeric codes are three-digit country codes. These codes are widely used in various applications, such as addressing, shipping, and banking. In the context of data science, ISO 3166 codes are often used to represent countries in datasets and to perform country-level analysis.
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