$VAR1 = {
        'Countries' => {
                       'Europe' => {
                                   'France' => undef,
                                   'Italy' => undef
                                   },
                       'North America' => {
                                          'Canada' => undef,
                                          'United States' => {
                                                             'Atlanta' => undef,
                                                             'Boston' => undef
                                                             },
                                          'Mexico' => undef
                                          }
                       }
        };