How do you switch nations in eu4?

[Vaporwave]

and when i mean switch nations, i mean like in hoi4 where you observe, observe as someone else and then play as that other nation

[grotaclas]

You can use the console command "tag" followed by the tag of the country[eu4.paradoxwikis.com] to switch to a specific country(you can use the command "debug_mode" to see the tags in the game) or you can use the console command "observe" and then you can switch to a country by clicking on it in some way(I'm not sure what you have to click exactly. It is something like shift-left-click or ctrl-left-click)