Use the Formidable Locations add-on to import Countries, States/Provinces, U.S. Counties, and U.S. Cities so you don’t have to add all the locations manually. After this data is imported, it can then be used in Lookup fields. Lookup fields allow your users to select a Country, for example, and then select from States/Provinces within that selected Country.
Formidable Forms – Cascading Locations
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