index-main/site/languages/en.php

<?php
return [
  'code'      => 'en',
  'default'   => false,
  'direction' => 'ltr',
  'locale'    => 'en_US.UTF-8',
  'name'      => 'English',
  'url'       => '/en',
  'translations' => [
    'impact.type'    => 'Impact',
    'impacts.title'  => 'Impacts',
  ],
];