WooCommerce woocommerce_get_country_locale filter - state selection required for Romania

woocommerce_get_country_locale_romania.php

add_filter('woocommerce_get_country_locale', 'woocommerce_get_country_locale_romania');

function woocommerce_get_country_locale_romania($countries) {
	//https://github.com/woocommerce/woocommerce/blob/master/includes/class-wc-countries.php
	$countries['RO']['state']['required'] = true;
}