How to show cities based on the selected state

Como se hace una condicion que al selecionar una respuesta, este asociada a otra respuesta. ejemplo: estado: florida; ciudad: miami

You may consider using our All states and cities widget: https://widgets.jotform.com/widget/all_states_and_cities. Here's how to add a widget in your form: https://www.jotform.com/help/252-How-to-Add-a-Widget-to-your-Form. 

If you want to customize the options, then the best option would be to use an individual dropdown for the City and show each based on the state selected through condition:

https://www.jotform.com/help/316-How-to-Show-or-Hide-Fields-Base-on-User-s-Answer

Here's an example: https://form.jotform.com/62730836101953.