How do I change a country's name and flag via a focus?

I'm trying to make Danzig playable at the start of the game, and want to make it form into Prussia via a focus. How do I do that?

You would need to add a cosmetic tag to the nation, and that tag would have it's own naming.

E.g.

In your focus/event/whatever: 

set_cosmetic_tag = NUK

And in a localization file: (remove stuff in brackets, just there as examples)

NUK_democratic:0 "COUNTRY NAME DEMOCRATIC" (e.g. United States of America) NUK_democratic_DEF:0 "COUNTRY NAME DESCRIPTION DEMOCRATIC" (e.g. The United States of America)
NUK_neutrality:0 "COUNTRY NAME NON ALIGNED"
NUK_neutrality_DEF:0 "COUNTRY NAME DESCRIPTION NON ALIGNED"
NUK_subject:0 "$OVERLORDADJ$ COUNTRY NAME" (Would display as "German COUNTRY NAME" if a puppet of Germany) NUK_autonomy_dominion:0 "COUNTRY NAME DEMOCRATIC" (e.g. Canada)
NUK_autonomy_dominion_DEF:0 "COUNTRY NAME WHEN DOMINION" (e.g. The Dominion of Canada)NUK_fascism:0 "COUNTRY NAME FASCISM"NUK_fascism_DEF:0 "COUNTRY NAME DESCRIPTION FASCISM" NUK_communism:0 "COUNTRY NAME COMMUNISM" NUK_communism_DEF:0 "COUNTRY NAME DESCRIPTION COMMUNISM" NUK_democratic_ADJ:0 "COUNTRY PERSON" (The people who live there, e.g. American) NUK_facsism_ADJ:0 "COUNTRY PERSON" NUK_communism_ADJ:0 "COUNTRY PERSON" NUK_neutrality_ADJ:0 "COUNTRY PERSON"

From Jordta95( I am not him I just have to much time on my hands)

You would need to add a cosmetic tag to the nation, and that tag would have it's own naming.

E.g.

In your focus/event/whatever: 

set_cosmetic_tag = NUK

And in a localization file: (remove stuff in brackets, just there as examples)

NUK_democratic:0 "COUNTRY NAME DEMOCRATIC" (e.g. United States of America) NUK_democratic_DEF:0 "COUNTRY NAME DESCRIPTION DEMOCRATIC" (e.g. The United States of America)
NUK_neutrality:0 "COUNTRY NAME NON ALIGNED"
NUK_neutrality_DEF:0 "COUNTRY NAME DESCRIPTION NON ALIGNED"
NUK_subject:0 "$OVERLORDADJ$ COUNTRY NAME" (Would display as "German COUNTRY NAME" if a puppet of Germany) NUK_autonomy_dominion:0 "COUNTRY NAME DEMOCRATIC" (e.g. Canada)
NUK_autonomy_dominion_DEF:0 "COUNTRY NAME WHEN DOMINION" (e.g. The Dominion of Canada)NUK_fascism:0 "COUNTRY NAME FASCISM"NUK_fascism_DEF:0 "COUNTRY NAME DESCRIPTION FASCISM" NUK_communism:0 "COUNTRY NAME COMMUNISM" NUK_communism_DEF:0 "COUNTRY NAME DESCRIPTION COMMUNISM" NUK_democratic_ADJ:0 "COUNTRY PERSON" (The people who live there, e.g. American) NUK_facsism_ADJ:0 "COUNTRY PERSON" NUK_communism_ADJ:0 "COUNTRY PERSON" NUK_neutrality_ADJ:0 "COUNTRY PERSON"

From Jordta95( I am not him I just have to much time on my hands)

-Noobest1001

 Thank you!