In authentication.php=>send country name in mail when new account

[leeloo]

In authentication.php for PS 1.2.5, I want to send country name in confirmation mail for new account.

                       if (!Mail::Send(intval($cookie->id_lang), 'account', 'Welcome!', 
                       array('{firstname}' => $customer->firstname, '{lastname}' => $customer->lastname, '{email}' => $customer->email, '{passwd}' => Tools::getValue('passwd')), $customer->email, $customer->firstname.' '.$customer->lastname))
                           $errors[] = Tools::displayError('cannot send email');
                       $smarty->assign('confirmation', 1);
                       $cookie->id_customer = intval($customer->id);
                       $cookie->customer_lastname = $customer->lastname;
                       $cookie->customer_firstname = $customer->firstname;
                       $cookie->passwd = $customer->passwd;
                       $cookie->logged = 1;
                       $cookie->email = $customer->email;

How to recover the country's name to send it the email ?