Drupal Views Exposed filter ( Taxonomy ) I have 3 fields ( Exposed filter ) 1 Country 2 State 3 City

When a respective Country is selected in the 1st field, I want the second filter ( Dropdown or autocompete ) to display states of the country selected in the 1st field &amp; when this is done based on the state selection , I want the 3rd field to show only the cities belonging to the state selected in the second field.

How can this be done ? any help ?
If you have arranged your taxonomy in a hierarchical manner, then you can use the Hierarchical Select module:

https://www.drupal.org/project/hierarchical_select