2. Test your dropdowns

3. Copy and paste this code into your form. That's it!

<select name="country" class="countries" id="countryId">
    <option value="">Select Country</option>
</select>
<select name="state" class="states" id="stateId">
    <option value="">Select State</option>
</select>
<select name="city" class="cities" id="cityId">
    <option value="">Select City</option>
</select>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> 
<script src="//geodata.solutions/includes/countrystatecity.js"></script>