Laravelは多言語ルーティングを登録します

Route::get('/', 'ShowHomeController')->name('en.home');
Route::get('/fr', 'ShowHomeController')->name('fr.home');

Route::multilingual('/', 'ShowHomeController')->name('home');

protected $middlewareGroups = [
    'web' => [
        \ChinLeung\LaravelMultilingualRoutes\DetectRequestLocale::class,
        // ...
    ]
];

// config/locales.php
'supported' => [
    'en',
    'es',
    'fr',
],