Thanks a lot for your help but I am still having trouble with the output

The output from your code is

$VAR1 = {
          'Countries' => {
               'Europe' => {
                    'EU' => {
                          'France' => ''
                          }
                },
                'North America' => {
                              'NA' => {
                                 'Mexico' => {},
                                 'United States' => {
                                       'US' => {
                                           'Atlanta' => '',
                                           'Boston' => ''
                                            }
                                        },                            
+                                 'Canada' => {}
                                 }
                              }
             }
        };
[download]

The 'find' codes such as 'EU','NA', 'US', etc. are still geting added to the data structure. I tried to modify your code without much success. I am still trying but it would be of great help, if you can help..