code: public function install($country = 'US', $currency = 'USD')
      {
          $this->installCountries($country);
          $this->installCurrencies($currency);
          $this->installTaxes($country);
          $this->installTaxGroups($country);
          $this->installTaxRules($country);
          $this->installCustomerGroups();
      }
docs: Installs the given countries and currencies by codes.
  
  @param string $country  The default country code
  @param string $currency The default currency code
  
  @throws \Exception