How many cities does wonders effect?

Add a clear explanation, if a wonder effect affects all cities or just one.

E.g.

1. Pyramids: does it modify districts for the city where its built or all cities?

2. When description says "on city or outpost"(like the Mausoleum), does it affect only the city where its built or all cities?

3. Taj mahal: effecting all CALM cities or only where its built?

https://www.reddit.com/r/humankind/comments/pwde58/how_many_cities_does_wonders_effect/