When humanity finally sets up self sustaining colonies on different celestial bodies in the solar system, in what ways would we setup communication infrastructure between them?

What would the meaning and worth of nations be, when there’s more than one world to set up nations on?​​​​​​​​​​​​​​

🔮This postcard may have been prophetic🔮
Postcard Created: Dec 2019
Follow up news: Wired➚, May 2020