Make the Country field default to US and State field default to North Carolina. Event Espresso 4 Registration form step.

set_country_option_with_a_default.php

<?php
//* Please do NOT include the opening php tag, except of course if you're starting with a blank file

add_action(
 'wp_enqueue_scripts', 
 'my_change_default_ee_country_option',  
    20
);
function my_change_default_ee_country_option(){
 $custom_js = 'jQuery(document).ready(function($){';
 $custom_js .= '$(".ee-reg-qstn-country").val("US");'; // United States
 $custom_js .= '$(".ee-reg-qstn-state").val(38);'; // North Carolina
 $custom_js .= '});';
    wp_add_inline_script('ee_form_section_validation', $custom_js);
}