https://www.paidmembershipspro.com/add-ons/state-dropdown/

Adds a Country and State dropdown selection field to the user Billing Address section at checkout for Paid Memberships Pro.

Changelog

* ENHANCEMENT: Moved Kosovo out of state options for Serbia. (@andrewlimaza)

* ENHANCEMENT: Added states for Singapore and United Kingdom. (@andrewlimaza, @ipokkel)

* ENHANCEMENT: Adjusted how we detect we're on the checkout page to be more reliable. (@andrewlimaza)

* REFACTOR: Moved away from using a PHP global for state options and moved to a helper function to get a list of all states for all countries `pmprosd_states()` (@andrewlimaza)

* BUG FIX: Fixed an issue where the `pmpro_default_country` would not be set for the Shipping Add On. (@andrewlimaza)